531. If third moment about mean is equal to zero, then distribution is ______________?
A. Negatively skewed
B. Symmetrical
C. positively skewed
D. None of these
532. The variance of 4,4,4,4,4,4 is _______________?
A. 4
B. (4)2
C. 8
D. None of these
533. The sum of absolute deviations from median is _____?
A. Zero
B. Positive
C. Least
D. None of these
534. The shape of the symmetrical distribution is _______?
A. U- Shaped
B. J- Shaped
C. Bell- Shaped
D. None of these
535. If all values are same then the measure of dispersion will be?
A. 1
B. 0
C. Mean
D. Mode
E. Median
536. Check the consistency used _____________?
A. Coefficient of dispersion
B. Mean coefficient
C. Coefficient of variance
D. Q.D.
537. The standard deviation is affected by the value of every____________?
A. Relative Dispersion
B. Observation
C. Absolute
D. Items
538. First movement about mean is always equal to ___________?
A. S.D.
B. 1
C. Zero
D. None of these
539. ________ is the simplest means of dispersion?
A. Standard deviation
B. Variation
C. C.V.
D. Range
540. If variance iv standard deviation is minimum if the deviation taken from______________?
A. Mode
B. Mean
C. Average
D. G.M.