statistics MCQs – Page 27

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 Review each marked answer and report any item that may be outdated or unclear.

521. Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is_______________?
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A. 2

B. 8

C. 4

D. 0
522. The standard deviation is affected by the value of every____________?
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A. Items

B. Observation

C. Relative Dispersion

D. Absolute

523. The mean and the variance are equal in________________?
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A. All probability distribution

B. The binomial distribution

C. The Poisson distribution

D. The hypergeometric distribution

524. The formula ?poqn/?poqo x100 is used to calculate_______________?
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A. The Paasche quantity index

B. The Paasche price index

C. The Laspeyres price index

D. The Laspeyres quantity index
525. Volume index in Marshall is _______________?
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A. ?qn(qo + qn)/?qn(po + pn) x100

B. ?pn(qo + qn)/?pn

C. ?qn(Po + Pn)/ ?qo (Po + Pn) x100

D. ?pn(Po + Pn)/ ?pn (Po + Pn)

526. In a symmetrical distribution mean, median and mode, _________________?
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A. Positive

B. Coincide

C. Greater

D. Less than

527. The Spearman Rank-Correlation test requires that the______________?
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A. Data should be of ordinal scale at least

B. Data must be distribution at least approximately as a t-distribution

C. Data must be from two independent samples

D. Data must be measured on the same scale

528. Let Z1,Z2,.Zn be independent and identically distributedrandom variable, satisfying E[? Zt ?]<?. Let N be an integer valued random variable whose value n depends only on the values of the first n Z's. Suppose E(N)< ?, then E(Z1,Z2,.Zn)=E(N)E(Z) is called ?
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A. Neyman Pearson Lemma

B. Independence Equation

C. Sequential Probability Likelihood Equation

D. Walds Equation

529. The A.M. is greater than mode is equal to ______________?
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A. +vely

B. Negatively

C. Skewness

D. zero

530. Binomial distribution is symmetrical when P=___________________?
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A. 1 P

B. q

C. x

D. n

531. Paasches Index number is ______________?
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A. ?pnqo/?poqo

B. ?pnqo/?pnqo x100

C. ?pnqn/?poqo

D. ?pnqn/?poqn x100

532. If mean and variance are not equal then distribution ________________?
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A. Skewed

B. Symmetrical

C. None

D. Equal

533. If Y=-8X 5 and SD of X is 3, then SD of Y is______________?
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A. 8

B. 3

C. None of these

D. 24
534. __________ of the distribution which is measured relative to the distribution known as Normal?
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A. Flatness

B. Skewed

C. Moment

D. Normal

535. A quantity obtained by applying certain rule or formula is known as ________________?
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A. Estimator

B. Sample

C. Test Statistics

D. Estimate

E. Estimation

536. A test is said to be most powerful test of size ?, if_______________?
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A. Among all other test of size ? or greater it has the largest ?

B. Among all other test of size ? or greater it has the largest 1 ?

C. Among all other test of size ? or greater it has the smallest power

D. Among all other test of size ? or less it has the largest power
537. The level of significance is denoted by _________________?
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A. ?

B. 1 ?

C. ?

D. 1 ?

538. Binomial distribution is negatively skewed when:__________________?
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A. p=0

B. p>1/2

C. p=1/2

D. p=1/3

539. If u = 5 and S.D. = 2.5 then Binomial distribution are ________________?
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A. Fair

B. Wrong

C. None of these

D. Unequal

540. In the binomial experiment, the outcomes of each trial maybe classified into ______________?
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A. Success or Failure

B. Success

C. None of these

D. Failure