statistics MCQs – Page 26

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 Review each marked answer and report any item that may be outdated or unclear.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

501. E(x1 x2)= ___________________?
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A. u1 u2

B. ux x2

C. 62 x2

D. 6x x2

502. __________ is the process of using sample information to reach?
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A. Unbiased

B. Biased

C. Population

D. Increase

503. In sampling with replacement be t a sampling unit can selected________________?
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A. Only once

B. None

C. More than once

D. Less than once

504. Check the consistency used _____________?
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A. Coefficient of dispersion

B. Mean coefficient

C. Coefficient of variance

D. Q.D.

505. The shape of the symmetrical distribution is _______?
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A. None of these

B. Bell- Shaped

C. J- Shaped

D. U- Shaped

506. If variance iv standard deviation is minimum if the deviation taken from______________?
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A. Mode

B. Mean

C. Average

D. G.M.

507. Ratio between given year and base year is called __________ in percentage?
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A. Price relative

B. Retail prices

C. None of these

D. Link relative

508. if f(x1,x2,xn;?)=g(?;?)h(x1,x2,.,xn), then ? is____________?
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A. Unbiased

B. Sufficient

C. Consistent

D. Efficient

509. Which of the following test use Rank Sums____________?
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A. Kruskal-Wallis and Wilcoxon tests

B. Runs test

C. Chi-Square and sign test

D. F test

510. Mean deviation is always ________________?
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A. More than S.D.

B. Negative

C. Less than S.D.

D. Equal to S.D.

511. First movement about mean is always equal to ___________?
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A. None of these

B. S.D.

C. Zero

D. 1

512. The arithmetic mean _________ by 10 if 10 is added to all values?
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A. Smaller

B. Decease

C. Increase

D. Largest

513. In which distribution successive trials are without replacement:____________________?
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A. Geometric distribution

B. Poisson distribution

C. Hypergeometric distribution

D. Binomial distribution

514. The degree to which numerical data tend to spread about an average value is a________________?
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A. Minimum

B. Dispersion

C. Range

D. variance

515. The sum of square of deviation is least when measured from ____________?
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A. Mode

B. Mean

C. Arbitrary value

D. G.M.

516. Average calculated used in index number by __________ method?
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A. Four

B. One

C. Three

D. Two

517. Let X1,X2,,Xn be a random sample from a density,,,, f(x ? ?) where ? is a value of the random variable ?with known density g?(?) Then the estimator ?(?) with/ respect to the prior g?(?) is define as_________________E[?(?)?X1,X2,..,Xn] is called?
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A. Bays estimator

B. Sufficient estimator

C. Posterior Bays estimator

D. Minimax estimator

518. If the smallest observation in a data is decreased, the average which is not affected is______________?
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A. Median

B. G.M.

C. Harmonic mean

D. Mean

519. Which of the following test must be two-sided ?
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A. Kruskal-Wallis

B. Wilcoxon Signed Rank

C. Runs test

D. Sign test

520. Standard deviation is always calculated from _____________?
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A. Mode

B. Mean

C. Median

D. G.M.

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