statistics MCQs – Page 6

Practise multiple-choice questions from statistics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

statistics Mcqs

1. sample linear regression 2. normal distribution 3. presentation of data 4. statistical inference 5. measures of location 6. basic statistics 7. correlation and regression 8. sampling 9. binomial and hyper geometric probability 10. index number 11. hypothesis testing 12. measures of dispersion

101. In correlation, both variables are______________?
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A. Fixed

B. Experimental

C. Random

D. Non-random

102. If mean is 25 and standard deviation is 5 then C.V (Coefficient of variation) is_______________?
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A. 25%

B. None of these

C. 100%

D. 20%

103. If P(A?B) =1/4 then P(AUB) is ________________?
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A. 2-Jan

B. 12-Jan

C. 8-Mar

D. 1/3

104. The square bracket is an finite G. Series is obtained by formula _________________?
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A. 1/1-rn

B. a/(1-r)n

C. a/1-rn

D. a/1-r

105. Which of the following is not a measure of central tendency ?
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A. Percentile

B. Mode

C. Standard deviation

D. Quartile

106. Lack of symmetry is called_______________?
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A. Non of these

B. Skewness

C. Absolute Dispersion

D. Relative Dispersion

107. Correlation coefficient is ___________ with respect to x and y?
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A. Skewed

B. Non-normal

C. #NAME?

D. Symmetrical

108. Hourly temperature recorded by weather bureau is the example of ___________?
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A. Continuous variable

B. Discrete variable

C. None of these

D. Qualitative variable

109. If r, between u = x and y = -x is _______________?
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A. 0

B. 1

C. Non of these

D. -1

110. The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months the production was 1,200 units. The average monthly production of the year will be_____________?
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A. 3012.11 units

B. 4021.12 units

C. 5031.10 units

D. 2066.55 units

111. If X and Y are independent then SD (X ? Y) is________________?
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A. Var(X)+Var(Y)????????????????

B. If Y=?8X ? 5 and SD of X is 3, then SD of Y is

C. SD(X)?SD(Y)

D. SD(X)+SD(Y)

E. SD(X)+SD(Y)???????????????

112. If a distribution is abnormally tall and peaked, then is can be said that the distribution is_____________?
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A. Leptokurtic

B. Mesokurtic

C. Pyrokurtic

D. Platykurtic

113. Random samples of size 17 are from a population that has 200 elements, a mean of 36, and a standard deviation of 8. which of the following best describes the from of the sampling distribution of the sample mean for this situation ?
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A. None of these alternatives is correct

B. Approximately normal because the sample size is small relative to the population size

C. Exactly

D. Approximately normal because of the central limit theorem

114. Continuous variable can assume __________ value?
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A. Constant

B. Specific

C. All possible

D. Accuracy

115. In probability sampling each sampling unit has some____________________?
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A. Large

B. Unknown

C. Know

D. Small

116. Life of a T.V picture tube is a____________?
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A. Qualitative variable

B. Continuous variable

C. Discrete variable

D. Constant

117. The mean deviation of the values, 18, 12, 15 is____________?
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A. 6

B. Zero

C. 2

D. 3

118. Sum of deviations will be zero if it is taken from_________________?
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A. Mode

B. Mean

C. Standard Deviation

D. Median

119. Correlation is _____________ of regression coefficients?
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A. M.D.

B. A.M.

C. H.M.

D. G.M.

120. In which approach to probability the outcomes are equally likely to occur ?
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A. Classical Probability

B. Subjective Probability

C. Relative Frequency

D. Independent

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