# Statistics MCQ Questions & Answers

Statistics MCQs : This section focuses on the "Statistics". These Multiple Choice Questions (MCQs) should be practiced to improve the Statistics skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

__________ is based on all observations of data

A. Median
B. Mode
C. Mean
D. None of these

Question 2

If the correlation coefficient is a positive value, then the slope of the regression line ___________

A. must also be positive
B. can be either negative or positive
C. can be zero
D. can not be zero

Question 3

In statistics, a sample means______________

A. A portion of the sample
B. A portion of the population
C. All the items under investigation
D. None of the above

Question 4

If the coefficient of determination is 0.81, the correlation coefficient __________

A. is 0.6561
B. could be either + 0.9 or - 0.9
C. must be positive
D. must be negative

Question 5

In a regression and correlation analysis if r 2 = 1, then ___________

A. SSE = SST
B. SSE = 1
C. SSR = SSE
D. SSR = SST

Question 6

Statistics branches include__________

A. Applied Statistics
B. Mathematical Statistics
C. Industry Statistics
D. Both A and B

Question 7

If there exists any relation between the sets of variables, it is called__________

A. Regression
B. Skewness
C. Correlation
D. All of these

Question 8

Statistic is a numerical quantity, which is calculated from_____________

A. Population
B. Sample
C. Data
D. Observations

Question 9

The ratio of the average deviations is called__________

A. Regression
B. Correlation
C. Skewness
D. All of these

Question 10

Which of the following is a unit free quantity___________

A. Range
B. Standard deviation
C. Coefficient of variation
D. Arithmetic mean

Question 11

If Q3=20 and Q1=10, the coefficient of quartile deviation is___________

A. 3
B. 1-3
C. 2-3
D. 1

Question 12

A fitted least squares regression line ____________

A. may be used to predict a value of y if the corresponding x value is given
B. is evidence for a cause-effect relationship between x and y
C. can only be computed if a strong linear relationship exists between x and y
D. None of these alternatives is correct.

Question 13

A chance variation in an observational process is____________

A. Dispersion/ Variability
B. Measurement error
C. Random error
D. Instrument error

Question 14

Which of the following measurement scales is required for the valid calculation of Karl Pearson’scorrelation coefficient?__________

A. Ordinal
B. Interval
C. Ratio
D. Nominal

Question 15

Data collected by NADRA to issue computerized identity cards (CICs) are__________

A. Unofficial data
B. Qualitative data
C. Secondary data
D. Primary data

Question 16

Data Classified by attributes are called____________

A. Qualitative Data
B. Quantitative Data
C. Ungrouped Data
D. Geographical Data

Question 17

The average of the squared deviations about the arithmetic mean for a set of numbers is__________

A. Standard deviation
B. Coefficient of mean deviation
C. Mean deviation
D. Variance

Question 18

Primary data and _____________ data are sam

A. Grouped
B. Secondary data
C. Ungrouped
D. None of these

Question 19

Which of the following is an absolute measure of dispersion?___________

A. Coefficient of variation
B. Coefficient of dispersion
C. Standard deviation
D. Coefficient of skewness

Question 20

The variables whose calculation is done according to the height, length, and weight are categorised as

A. Discrete Variables
B. Flowchart Variables
C. Measuring Variables
D. Continuous Variables

Question 21

The scatter in a series of values about the average is called___________

A. Central tendency
B. Dispersion
C. Skewness
D. Symmetry

Question 22

In regression analysis, the variable that is used to explain the change in the outcome of an experiment, orsome natural process, is called ________

A. the x-variable
B. the independent variable
C. the predictor variable
D. all of the above (a-c) are correct

Question 23

What is the arithmetic mean of the data set: 4, 5, 0, 10, 8, and 3?____________

A. 5
B. 6
C. 7
D. 5

Question 24

Larger values of r 2 (R2 ) imply that the observations are more closely grouped about the __________

A. average value of the independent variables
B. average value of the dependent variable
C. least squares line
D. origin

Question 25

Which of the following point is not related with the utility of correlation?________

A. Relation between two variables
B. Help in decision making
C. Useful in research work
D. All of these

Question 26

Individual respondents, focus groups, and panels of respondents are categorized as_________

A. Primary Data Sources
B. Secondary Data Sources
C. Itemised Data Sources
D. Pointed Data Sources

Question 27

Statistics are aggregates of______________

A. Methods
B. Calculations
C. Facts
D. Data

Question 28

In regression, the equation that describes how the response variable (y) is related to the explanatoryvariable (x) is___________

A. the correlation model
B. the regression model
C. used to compute the correlation coefficient
D. None of these alternatives is correct.

Question 29

SSE can never be _____________

A. larger than SST
B. smaller than SST
C. equal to 1
D. equal to zero

Question 30

In inferential statistics, we study____________

A. The methods to make decisions about the population based on sample results
B. How to make decisions about mean, median, or mode
C. How a sample is obtained from a population
D. None of the above

Question 31

Which one of the following measurement does not divide a set of observations into equal parts?__________

A. Quartiles
B. Standard Deviations
C. Percentiles
D. Deciles

Question 32

What will be the range of r when we find that the dependent variable increases as the independent variableincreases?__________

A. 0 to -0.05
B. 1 to 2
C. 0 .1 to 1
D. None of these

Question 33

The mean of a distribution is 23, the median is 24, and the mode is 25.5. It is most likely that this distributionis__________

A. Positively Skewed
B. Symmetrical
C. Asymptotic
D. Negatively Skewed

Question 34

The measurements of spread or scatter of the individual values around the central point is called________

A. Measures of dispersion
B. Measures of central tendency
C. Measures of skewness
D. Measures of kurtosis

Question 35

The average of squared deviations about the arithmetic mean for a set of numbers is called___________

A. Standard deviation
B. Coefficient of mean deviation
C. Mean deviation
D. Variance

Question 36

The sum of squared deviation is least from____________

A. Median
B. Mean
C. Mode
D. Standard Deviation

Question 37

Which of the following measures of dispersion is expressed in the same units as the units ofobservation?__________

A. Variance
B. Standard deviation
C. Coefficient of variation
D. Coefficient of standard deviation

Question 38

The correlation coefficient is used to determine________

A. A specific value of the y-variable given a specific value of the x-variable
B. A specific value of the x-variable given a specific value of the y-variable
C. The strength of the relationship between the x and y variables
D. None of these

Question 39

Review of performance appraisal, labour turnover rates, planning of incentives and training programs and areexamples of ___________

A. Statistics in Production
B. Statistics in Marketing
C. Statistics in Finance
D. Statistics in Personnel Management

Question 40

The number of accidents in a city during 2010 is___________

A. Discrete variable
B. Continuous variable
C. Qualitative variable
D. Constant

Question 41

Statistics branches include

A. Applied Statistics
B. Mathematical Statistics
C. Industry Statistics
D. Both A and B

Question 42

Given below the four sets of observations. Which set has the minimum variation?____________

A. 46, 48, 50, 52, 54
B. 30, 40, 50, 60, 70
C. 40, 50, 60, 70, 80
D. 48, 49, 50, 51, 52

Question 43

The Geometric Mean of -2, 4, 03, 6, 0 will be______________

A. -3
B. 0
C. Cannot be Computed
D. None of these

Question 44

The range of the values -5, -8, -10, 0, 6, 10 is___________

A. 0
B. 10
C. -10
D. 20

Question 45

The first hand and unorganized form of data is called____________

A. Secondary data
B. Organized data
C. Primary data
D. None of these

Question 46

Which one is the not measure of dispersion.____________

A. The Range
B. 50th Percentile
C. Inter-Quartile Range
D. Variance

Question 47

The measures of dispersion can never be__________

A. Positive
B. Zero
C. Negative
D. Equal to

Question 48

A set of values is said to be relatively uniform if it has___________

A. High Dispersion
B. Zero Dispersion
C. Littel Dispersion
D. Negative Dispersion

Question 49

In a regression analysis if SSE = 200 and SSR = 300, then the coefficient of determination is ___________

A. 0.6667
B. 0.6
C. 0.4
D. 1.5

Question 50

The measure of dispersion which uses only two observations is called__________

A. Range
B. Quartile deviation
C. Mean deviation
D. Standard deviation

Question 51

The variables whose calculation is done according to the weight, height and length and weight are knownas__________

A. Flowchart Variables
B. Discrete Variables
C. Continuous Variables
D. Measuring Variables

Question 52

The variables whose calculation is done according to the weight, height and length and weight are knownas:_______

A. Flowchart Variables
B. Discrete Variables
C. Continuous Variables
D. Measuring Variables

Question 53

If Y = ax ± b, where a and b are any two numbers but a 0, then M.D(Y) is equal to__________

A. M.D(X)
B. M.D(X) ± b
C. a M.D(X)
D. M.D(Y) + M.D(X)

Question 54

The coefficient of correlation____________

A. is the square of the coefficient of determination
B. is the square root of the coefficient of determination
C. is the same as r-square
D. can never be negative

Question 55

Regression analysis was applied between $sales (y) and$ advertising (x) across all the branches of a major international corporation. The following regression function was obtained) ! = 5000 + 7.25x If the advertising budgets of two branches of the corporation differ by $30,000, then what will be the predicted difference in their sales? __________ A.$2,17,500
B. $2,22,500 C.$5,000
D. $7.25 View Answer Question 56 The standard deviation one distribution divided by the mean of the distribution and expressing inpercentage is called_____________ A. Coefficient of Standard deviation B. Coefficient of skewness C. Coefficient of quartile deviation D. Coefficient of variation View Answer Question 57 Suppose the correlation coefficient between height (as measured in feet) versus weight (as measured in pounds) is 0.40. What is the correlation coefficient of height measured in inches versus weight measured in ounces? [12 inches = one foot; 16 ounces = one pound] _______ A. 0.4 B. 0.3 C. 0.533 D. cannot be determined from information given e. none of these View Answer Question 58 Which of the following describe the middle part of a group of numbers?_____________ A. The Measure of Variability B. The Measure of Central Tendency C. The Measure of Association D. The Measure of Shape View Answer Question 59 Sum of absolute deviations about median is_________ A. Zero B. Maximum C. Minimum D. One View Answer Question 60 If there is a very strong correlation between two variables then the correlation coefficient must be _______ A. any value larger than 1 B. much smaller than 0, if the correlation is negative C. much larger than 0, regardless of whether the correlation is negative or positive D. None of these alternatives is correct. View Answer Question 61 The number of accidents in a city during 2010 is__________ A. Discrete variable B. Continuous variable C. Qualitative variable D. Constant View Answer Question 62 If the correlation coefficient is 0.8, the percentage of variation in the response variable explained by thevariation in the explanatory variable is____________ A. 0.80% B. 80% C. 0.64% D. 64% View Answer Question 63 If the coefficient of determination is a positive value, then the regression equation__________ A. must have a positive slope B. must have a negative slope C. could have either a positive or a negative slope D. must have a positive y intercept View Answer Question 64 Measurements usually provide_____________ A. Discrete Data B. Continuous Data C. Qualitative Data D. Primary Data View Answer Question 65 The average of squared deviations from mean is called_____________ A. Mean deviation B. Variance C. Standard deviation D. Coefficient of variation View Answer Question 66 The arithmetic mean of all possible outcomes is known as___________ A. expected value B. critical value C. variance D. standard deviation View Answer Question 67 The sum of values divided by their number is called__________ A. Median B. Harmonic Mean C. Mean D. Mode View Answer Question 68 Which of the following measurement scales is required for the valid calculation of spearman correlationcoefficient?_____________ A. Ordinal B. Interval C. Nominal D. Ratio View Answer Question 69 The grouped data is also called_________ A. Raw data B. Primary data C. Secondary data D. Qualitative data View Answer Question 70 Sample statistics are also represented as A. Lower Case Greek Letter B. Roman Letters C. Associated Roman Alphabets D. Upper Case Greek Letter View Answer Question 71 The positive square root of the mean of the squares of the deviations of observations from their mean iscalled____________ A. Variance B. Range C. Standard deviation D. Coefficient of variation View Answer Question 72 Standard deviation is calculated from the Harmonic Mean (HM)____________ A. Always B. Sometimes C. Never D. None of these View Answer Question 73 A constant variable can take values____________ A. Zero B. Fixed C. Not fixed D. Nothing View Answer Question 74 If the difference of the third and first quartiles is divided by the sum of the third and first quartiles then it isknown as __________ A. Quartile B. Coefficient of mean deviation C. Coefficient of quartile deviation D. None of the above View Answer Question 75 Which of the following is not cause of the correlation?____________ A. Direct relationship B. Correlation due to any other common cause C. Mutual Reaction D. None of these View Answer Question 76 The values of mean, median and mode can be____________ A. Some time equal B. Never equal C. Always equal D. None of these View Answer Question 77 In a symmetrical distribution, mean is ____________ mode A. Equal to B. Less than C. Greater than D. Not equal to View Answer Question 78 Which branch of statistics deals with the techniques that are used to organize, summarize, and present thedata__________ A. Advanced Statistics B. Probability Statistics C. Inferential Statistics D. Descriptive Statistics View Answer Question 79 Perfect correlation is one Perfect correlation is one in which_________ A. Area of a circle is in definite constant relationship with radius B. When area of the circle is ½ radius C. None of these D. All of these View Answer Question 80 The empirical relation between mean, median, and mode is____________ A.$ 3 mean – 2 median $B.$ 3 median – 2 mean $C.$ 2 mean – 3 median $D.$ mean = median = mode $View Answer Question 81 The measures used to calculate the variation present among the observations in the unit of the variable iscalled___________ A. Relative measures of dispersion B. Coefficient of skewness C. Absolute measures of dispersion D. Coefficient of variation View Answer Question 82 The sum of squares of the deviations is minimum, when deviations are taken from__________ A. Mean B. Mode C. Median D. Zero View Answer Question 83 Suppose that you have carried out a regression analysis where the total variance in the response is 133452 and the correlation coefficient was 0.85. The residual sums of squares is____________ A. 37032.92 B. 20017.8 C. 113434.2 D. 96419.07 View Answer Question 84 Study of scatteredness of observations is known as ________ A. Measure of dispersion B. Standard deviation C. Measure of central tendency D. None of the above View Answer Question 85 Mean deviation computed from a set of data is always____________ A. Negative B. Equal to standard deviation C. More than standard deviation D. Less than standard deviation View Answer Question 86 The calculation of mean and variance is based on_____________ A. Small values only B. Large values only C. Extreme values only D. All values View Answer Question 87 The mean of 10 numbers is 9, then the sum (total) of these numbers will be________ A. 9 B. 0.9 C. 70 D. 90 View Answer Question 88 Review of performance appraisal, labour turnover rates, planning of incentives, and training programs and are examples of A. Statistics in Production B. Statistics in Marketing C. Statistics in Finance D. Statistics in Personnel Management View Answer Question 89 You asked five of your classmates about their height. On the basis of this information, you stated that theaverage height of all students in your university or college is 67 inches. This is an example of___________ A. Descriptive statistics B. Inferential Statistics C. Parameter D. Population View Answer Question 90 Data must be arranged either in ascending or descending order if some want to compute________________ A. Mode B. Median C. Harmonic Mean D. Median View Answer Question 91 Sum of dots when two dice are rolled is___________ A. A discrete variable B. A continuous variable C. A constant D. A qualitative variable View Answer Question 92 If mean is less than mode, the distribution will be____________ A. Positively skewed B. Negatively skewed C. Symmetrical D. None of these View Answer Question 93 Which mean is most affected by extreme values?____________ A. Geometric Mean B. Harmonic Mean C. Arithmetic mean D. Trimmed Mean View Answer Question 94 To enhance a procedure the control charts and procedures of descriptive statistics are classified into A. Behavioural Tools B. Serial Tools C. Industry Statistics D. Statistical Tools View Answer Question 95 Harmonic men gives more weigntage to____________ A. Small Values B. Large Values C. Positive Values D. Negative Values View Answer Question 96 In quality control of manufactured items, the most common measure of dispersion is___________ A. Range B. Average deviation C. Standard deviation D. Quartile deviation View Answer Question 97 The degree to which numerical data tend to spread about an average value called________ A. Constant B. Flatness C. Variation D. Skewness View Answer Question 98 The data which have already been collected by someone are called_____________ A. Raw data B. Array data C. Secondary data D. Fictitious data View Answer Question 99 If the maximum value in a series is 25 and its range is 15, the maximum value of the series is___________ A. 10 B. 15 C. 25 D. 35 View Answer Question 100 Which measure of dispersion has a different unit other than the unit of measurement of values________ A. Range B. Standard deviation C. Variance D. Mean deviation View Answer Question 101 Which of the following Measure of averages is affected by extreme (very small or very large) values in thedata set?____________ A. Geometric Mean B. Median C. Arithmetic Mean D. Harmonic Mean View Answer Question 102 Life of a T.V picture tube is a__________ A. Discrete variable B. Continuous variable C. Qualitative variable D. Constant View Answer Question 103 Census reports used as a source of data is________ A. Primary source B. Secondary source C. Organized data D. None View Answer Question 104 If the observations of a variable X are, -4, -20, -30, -44 and -36, then the value of the range willbe_________ A. -48 B. 40 C. -40 D. 48 View Answer Question 105 Statistics results are_____________ A. Absolutely Correct B. Not True C. True on Average D. Universally True View Answer Question 106 If there are ten values each equal to 10, then standard deviation of these values is___________ A. 100 B. 20 C. 10 View Answer Question 107 In regression analysis, the variable that is being predicted is the __________ A. response, or dependent, variable B. independent variable C. intervening variable D. is usually x View Answer Question 108 Sum of deviations will be zero if it is taken from___________ A. Mean B. Mode C. Median D. Standard Deviation View Answer Question 109 A symmetrical distribution has mean equal to 4. Its mode will be____________ A. Equal to 4 B. Less than 4 C. Greater than 4 D. Not equal to 4 View Answer Question 110 If a distribution is abnormally tall and peaked, then is can be said that the distribution is__________ A. Leptokurtic B. Pyrokurtic C. Platykurtic D. Mesokurtic View Answer Question 111 In statistics, a sample means_____________ A. A portion of the sample B. A portion of the population C. All the items under investigation D. None of the above View Answer Question 112 When mean, median, and mode are identical, the distribution is___________ A. Positively Skewed B. Negatively Skewed C. Symmetrical Bivariate D. Uniform View Answer Question 113 The weights of students in a college/ school is a___________ A. Discrete Variable B. Continuous Variable C. Qualitative Variable D. None of these View Answer Question 114 The measures of dispersion are changed by the change of_______________ A. Scale B. Origin C. Unit D. None of these View Answer Question 115 If the coefficient of determination is equal to 1, then the correlation coefficient _______ A. must also be equal to 1 B. can be either -1 or +1 C. can be any value between -1 to +1 D. must be -1 View Answer Question 116 When data are collected in a statistical study for only a portion or subset of all elements of interest we areusing___________ A. A sample B. A Parameter C. A Population D. Both b and c View Answer Question 117 Which measure of dispersion can be computed in case of openend classes?___________ A. Standard deviation B. Range C. Quartile deviation D. Coefficient of variation View Answer Question 118 Questionnaire survey method is used to collect____________ A. Secondary data B. Qualitative variable C. Primary data D. None of these View Answer Question 119 In descriptive statistics, we study____________ A. The description of the decision-making process B. The methods for organizing, displaying and describing data C. How to describe the probability distribution D. None of the above View Answer Question 120 What is the average of 3%, 7%, 10%, and 16% ?____________ A. 8% B. 9% C. 10% D. 11% View Answer Question 121 A scatter diagram is________ A. A statistical test B. Linear C. Curvilinear D. A graph showing x and y values View Answer Question 122 Regression modeling is a statistical framework for developing a mathematical equation that describes how __________ A. one explanatory and one or more response variables are related B. several explanatory and several response variables response are related C. one response and one or more explanatory variables are related D. All of these are correct. View Answer Question 123 A numerical value used as a summary measure for a sample, such as a sample mean, is known as a A. Population Parameter B. Sample Parameter C. Sample Statistic D. Population Mean View Answer Question 124 In statistics, a population consists of____________ A. All People living in a country B. All People living in the area under study C. All subjects or objects whose characteristics are being studied D. None of the above View Answer Question 125 Which of the following is most likely to be an inverse relationship?__________ A. Between income and expenditure on education B. Between price increase and demand for a certain product C. Between average number of hours studied per day and the performance of the students in the examination D. Between advertising expenditure and sales of a product. View Answer Question 126 When a multiple correlation coefficient r 1.2=1, then it shows __________ A. Reasonably good relationship B. Lack of linear relationship C. Perfect relationship D. None of these View Answer Question 127 Which of the following is the highest range of r?__________ A. 0 and 1 B. -1 and 0 C. -1 and 1 D. None of these View Answer Question 128 Which of the following is true if the estimating equation has to be a perfect estimator of the dependentvariable?______________ A. The coefficient of determination is -1 B. All the data points are on the regression line. C. The standard error of the estimate is zero D. B and C View Answer Question 129 Which is a method of measuring correlation?________ A. Graphic correlation B. Scatter diagrams C. None of these D. Both of these View Answer Question 130 Find the median of the following data: 160, 180, 200, 280, 300, 320, 400______________ A. 140 B. 300 C. 180 D. 280 View Answer Question 131 If there are many extreme scores on all examination, the dispersion is____________ A. Large B. Small C. Normal D. Symmetric View Answer Question 132 The mean deviation of the scores 12, 15, 18 is_____________ A. 6 B. 0 C. 3 D. 2 View Answer Question 133 Data in the Population Census Report is___________ A. Grouped data B. Ungrouped data C. Secondary data D. Primary data View Answer Question 134 The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient ofvariation?____________ A. 60.40% B. 48.30% C. 35.70% D. 27.80% View Answer Question 135 The distribution in which mean = 60 and mode = 50, will be ____________ A. Symmetrical B. Positive skewed C. Negative skewed D. None of these View Answer Question 136 Cumulative frequency is___________ A. Decreasing B. Increasing C. Different D. None of these View Answer Question 137 In Uni-model distribution, if mode is less than mean, then the distribution will be__________ A. Symmetrical B. Normal C. Positively skewed D. Negatively skewed View Answer Question 138 The measure of dispersion which is expressed in terms of the units of the observations I called________Absolute measure A. Variance B. Relative measure C. None of the above D. All of the Above View Answer Question 139 The most repeated (popular) value in a data set is called____________ A. Median B. Mean C. Mode D. Geometric Mean View Answer Question 140 If all the scores on examination cluster around the mean, the dispersion is said to be________ A. Small B. Large C. Normal D. Symmetrical View Answer Question 141 Standard deviation of first 50 natural number is__________ A. 12.43 B. 10.43 C. 14.43 D. 16.43 View Answer Question 142 Assume the same variables as in question 28 above; height is measured in feet and weight is measured in pounds. Now, suppose that the units of both variables are converted to metric (meters and kilograms). The impact on the slope is__________ A. the sign of the slope will change B. the magnitude of the slope will change C. both a and b are correct D. neither a nor b are correct View Answer Question 143 The standard deviation is independent of_____________ A. Change of origin B. Change of scale of measurement C. Change of origin and scale of measurement D. Difficult to tell View Answer Question 144 Statistics branches include___________ A. Applied Statistics B. Mathematical Statistics C. Industry Statistics D. Both A and B View Answer Question 145 Which of the following Measure of Averages is not based on all the values given in the data set___________ A. Arithmetic Mean B. Geometric Mean C. Median D. Mode View Answer Question 146 When a multiple correlation coefficient R 1.23 =1 , then R 2.13 is________ A. 1 B. -1 C. None of these View Answer Question 147 Graphical and numerical methods are specialized processes utilized in_________ A. Education Statistics B. Descriptive Statistics C. Business Statistics D. Social Statistics View Answer Question 148 The relationship between number of beers consumed (x) and blood alcohol content (y) was studied in 16 male college students by using least squares regression. The following regression equation was obtained from this study: != -0.0127 + 0.0180x The above equation implies that__________ A. each beer consumed increases blood alcohol by 1.27% B. on average it takes 1.8 beers to increase blood alcohol content by 1% C. each beer consumed increases blood alcohol by an average of amount of 1.8% D. each beer consumed increases blood alcohol by exactly 0.018 View Answer Question 149 Which of the following cannot be less than zero (negative)?_____________ A. Median B. Geometric Mean C. Arithmetic Mean D. Harmonic Mean View Answer Question 150 The sum of absolute deviations is minimum if these deviations are taken from the_____________ A. Mean B. Mode C. Median D. Upper quartile View Answer Question 151 In a regression analysis if r 2 = 1, then ___________ A. SSE must also be equal to one B. SSE must be equal to zero C. SSE can be any positive value D. SSE must be negative View Answer Question 152 In regression analysis, if the independent variable is measured in kilograms, the dependent variable ______ A. must also be in kilograms B. must be in some unit of weight C. cannot be in kilograms D. can be any units View Answer Question 153 If two variables, x and y, have a very strong linear relationship, then ____________ A. there is evidence that x causes a change in y B. there is evidence that y causes a change in x C. there might not be any causal relationship between x and y D. None of these alternatives is correct. View Answer Question 154 If mean, median, and mode are all equal then distribution will be_______________ A. Positive Skewed B. Negative Skewed C. Symmetrical D. None of these View Answer Question 155 The value of standard deviation changes by a change of__________ A. Origin B. Scale C. Algebraic signs D. None View Answer Question 156 Standard deviation is always___________ A. Negative B. Positive C. Zero D. None of the above View Answer Question 157 The middle value of an ordered array of numbers is the_____________ A. Mode B. Mean C. Median D. Mid-Point View Answer Question 158 What is the geometric mean of: 1, 2, 8, and 16?___________ A. 4 B. 5 C. 6 D. 7 View Answer Question 159 Given$X_1=12,X_2=19,X_3=10,X_4=7$, then$\sum_{i=1}^4 X_i$equals?________ A. 36 B. 48 C. 41 D. 29 View Answer Question 160 The scale applied in statistics which imparts a difference of magnitude and proportions is considered as A. Exponential Scale B. Goodness Scale C. Ratio Scale D. Satisfactory Scale View Answer Question 161 The measures used to calculate the variation present among the observations relative to their average iscalled_______ A. Coefficient of kurtosis B. Absolute measures of dispersion C. Quartile deviation D. Relative measures of dispersion View Answer Question 162 Which of the following is not based on all the observations?________ A. Arithmetic Mean B. Geometric Mean C. Harmonic Mean D. Mode View Answer Question 163 If the dispersion is small, the standard deviation is____________ A. Large B. Zero C. Small D. Negative View Answer Question 164 If in a distribution left tail is longer than right tail, then the distribution will be____________ A. Symmetrical B. Positive skewed C. Negative skewed D. None of these View Answer Question 165 According to the empirical rule, approximately what percent of the data should lie within$\mu \pm2\sigma$?_______ A. 75% B. 68% C. 99.70% D. 90% View Answer Question 166 The height of a student is 60 inches. This is an example of___________ A. Qualitative data B. Categorical data C. Continuous data D. Discrete data View Answer Question 167 Sample statistics are also represented as__________ A. Lower Case Greek Letter B. Roman Letters C. Associated Roman Alphabets D. Upper Case Greek Letter View Answer Question 168 The range of the scores 29, 3, 143, 27, 99 is_____________ A. 140 B. 143 C. 146 D. 70 View Answer Question 169 A numerical value used as a summary measure for a sample, such as a sample mean, is known as a_______ A. Population Parameter B. Sample Parameter C. Sample Statistic D. Population Mean View Answer Question 170 If the difference of the third and first quartile is divided by the sum of the third and first quartile then it isknown as__________ A. Quartile B. Coefficient of mean deviation C. Coefficient of quartile deviation D. None of the above View Answer Question 171 Graphical and numerical methods are specialized process utilized in A. Education Statistics B. Descriptive Statistics C. Business Statistics D. Social Statistics View Answer Question 172 Which of the following can not be determined graphically? A. Mean B. Median C. Mode D. None of these View Answer Question 173 Individual respondents, focus groups, and panels of respondents are categorised as A. Primary Data Sources B. Secondary Data Sources C. Itemized Data Sources D. Pointed Data Sources View Answer Question 174 The mean, mode, and median of the data set: 5, 4, 10, 12, 1, 5, 3, 7, 15, and 8 is respectively___________ A. 5, 6, 2007 B. 7, 6, 2005 C. 6, 5, 2007 D. 7, 5, 2006 View Answer Question 175 In the case of an algebraic model for a straight line, if a value for the x variable is specified, then________ A. the exact value of the response variable can be computed B. the computed response to the independent value will always give a minimal residual C. the computed value of y will always be the best estimate of the mean response D. none of these alternatives is correct. View Answer Question 176 The arithmetic average of the absolute deviation of a series known as the________ A. Standard deviation B. Coefficient of mean deviation C. Mean deviation D. None of the above View Answer Question 177 The scale applied in statistics which imparts a difference of magnitude and proportions is considered as_____ A. Exponential Scale B. Goodness Scale C. Ratio Scale D. Satisfactory Scale View Answer Question 178 If any of the value in data set is negative then it is impossible to compute___________ A. Arithmetic Mean B. Harmonic Mean C. Geometric Mean D. Mode View Answer Question 179 The extreme values in negatively skewed distribution lie in the_____________ A. Middle B. Right Tail C. Left Tail D. Whole Curve View Answer Question 180 To find the average speed of a journey which is the appropriate measure of central tendency____________ A. Mean B. Geometric Mean C. Harmonic Mean D. Weighted Mean View Answer Question 181 The mean deviation is minimum when deviations are taken from____________ A. Mean B. Mode C. Median D. Zero View Answer Question 182 When the correlation coefficient between x and y is positive, then as variable x decreases, variable yRemains the same________ A. Increases B. Decreases C. Changes linearly D. none View Answer Question 183 If any of the value in the data set is zero then it is not possible (i.e. impossible) to compute_____________ A. Mode B. Median C. Mean D. Harmonic Mean View Answer Question 184 A method used to examine inflation rate anticipation, unemployment rate and capacity utilisation to produceproducts is classified as________ A. Data Exporting Technique B. Data Importing Technique C. Forecasting Technique D. Data Supplying Technique View Answer Question 185 The data are the same as for question 4 above. The relationship between number of beers consumed (x) and blood alcohol content (y) was studied in 16 male college students by using least squares regression. The following regression equation was obtained from this study: != -0.0127 + 0.0180x Suppose that the legal limit to drive is a blood alcohol content of 0.08. If Ricky consumed 5 beers the model would predict that he would be____________ A. 0.09 above the legal limit B. 0.0027 below the legal limit C. 0.0027 above the legal limit D. 0.0733 above the legal limit View Answer Question 186 Population census is conducted through________ A. Sample survey B. Accounting C. Investigation D. Complete enumeration View Answer Question 187 The measure of dispersion which uses only two observations is called___________ A. Mean B. Median C. Range D. Coefficient of variation View Answer Question 188 Regression analysis was applied to return rates of sparrowhawk colonies. Regression analysis was used to study the relationship between return rate (x: % of birds that return to the colony in a given year) and immigration rate (y: % of new adults that join the colony per year). The following regression equation was obtained) ! = 31.9 – 0.34x Based on the above estimated regression equation, if the return rate were to decrease by 10% the rate of immigration to the colony would________________ A. increase by 34% B. increase by 3.4% C. decrease by 0.34% D. decrease by 3.4% View Answer Question 189 The algebraic sum of deviations from mean is__________ A. Maximum B. Zero C. Minimum D. Undefined View Answer Question 190 A regression analysis between sales (in$1000) and price (in dollars) resulted in the following equation: ! = 50,000 - 8X The above equation implies that an ________

A. increase of $1 in price is associated with a decrease of$8 in sales
B. increase of $8 in price is associated with an increase of$8,000 in sales
C. increase of $1 in price is associated with a decrease of$42,000 in sales
D. increase of $1 in price is associated with a decrease of$8000 in sales

Question 191

Half of the difference between upper and lower quartiles is called___________

A. Interquartile range
B. Quartile deviation
C. Mean deviation
D. Standard deviation

Question 192

The shape of symmetrical distribution is _______

A. U shaped
B. Bell Shaped
C. J Shaped
D. None of these

Question 193

A method used to examine inflation rate anticipation, unemployment rate, and capacity utilization to produce products is classified as

A. Data Exporting Technique
B. Data Importing Technique
C. Forecasting Technique
D. Data Supplying Technique

Question 194

A parameter is a measure which is computed from______________

A. Population data
B. Sample data
C. Test statistics
D. None of these

Question 195

Calculate Standard deviation for the following sample data 2,4,6,8,10 and 12. Is________

A. 4.42
B. 2.42
C. 3.42
D. 5.42

Question 196

The measure of dispersion which is expressed in terms of the nits of observations__________

A. Absolute measure
B. Variance
C. Relative measure
D. None of the above

Question 197

In symmetrical distribution, mean, median, and mode are__________

A. Equal
B. Different
C. Zero
D. None of these

Question 198

________ is the measure of average which can have more than one value____________

A. Mean
B. Median
C. Harmonic Mean
D. Mode

Question 199

Arithmetic Mean is __________ affected by extreme values

A. Not
B. Highly
C. Less
D. None of these

Question 200

The variance is zero only if all observations are the___________

A. Different
B. Square
C. Square root
D. Same

Question 201

Which of these represent qualitative data___________

A. Height of a student
B. Liking or disliking of (500) persons of a product
C. The income of a government servant in a city
D. Yield from a wheat plot

Question 202

To enhance a procedure the control charts and procedures of descriptive statistics are classified into_______

A. Behavioural Tools
B. Serial Tools
C. Industry Statistics
D. Statistical Tools

Question 203

Sum of square of the deviations about mean is___________

A. Maximum
B. Minimum
C. Zero
D. None of these

Question 204

In least squares regression, which of the following is not a required assumption about the error term ε?___________

A. The expected value of the error term is one.
B. The variance of the error term is the same for all values of x.
C. The values of the error term are independent.
D. The error term is normally distributed)

Question 205

When the two regression line coincide, then r is_________

A. 1
B. -1
C. None of these

Question 206

The algebraic sum of deviations from mean is___________

A. Maximum
B. Zero
C. Minimum
D. Undefined

Question 207

If the distribution is symmetric about mean then the skewness is_____________.

A. 1
B. Positive
C. negative
D. none

Question 208

The appropriate average for calculating average percentage increase in population is____________

A. Arithmetic Mean
B. Harmonic Mean
C. Mode
D. Geometric Mean

Question 209

In statistics, conducting a survey means__________

A. Collecting information from elements
B. Making mathematical calculations
C. Drawing graphs and pictures
D. None of the above