statistics MCQs – Page 68

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 Review each marked answer and report any item that may be outdated or unclear.

1343. If third moment about mean is equal to zero, then distribution is ______________?
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A. positively skewed

B. None of these

C. Negatively skewed

D. Symmetrical
1344. The S.D. and variance are ____ of origine?
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A. Multiplied

B. Independent

C. Variance

D. Change

1345. Mean deviation =______ S.D?
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A. 5-Jun

B. 3-Feb

C. 4/5

D. 6-May

1347. The shape of the symmetrical distribution is _______?
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A. None of these

B. U- Shaped

C. Bell- Shaped

D. J- Shaped

1349. ________ is the simplest means of dispersion?
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A. Standard deviation

B. C.V.

C. Variation

D. Range
1352. If y = bx + a the mean deviation of y is_____________?
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A. M.D.of x

B. S.D. of x

C. S.D. of y

D. var (x)

1353. which is poor measure of dispersion in open-end distribution ________________?
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A. Range

B. None of these

C. Semi-inter quartile range

D. Quartile- deviation

1354. Absolute sum of deviations is minimum from _______________?
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A. Mean

B. S.D. of x

C. Normal

D. Coefficient of variance

1358. Mean deviation is always ________________?
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A. Negative

B. More than S.D.

C. Less than S.D.

D. Equal to S.D.