A. S.D.
B. 1
C. Zero
D. None of these
Related Mcqs:
- Second moment about mean is always equal to _____________?
A. S.D.
B. C.V.
C. Variance
D. Square - Mean deviation is always ________________?
A. Equal to S.D.
B. More than S.D.
C. Less than S.D.
D. Negative - The standard deviation is always _________ than mean deviation?
A. Greater
B. Less
C. Equal
D. None - The mean of a binomial distribution is always:____________________?
A. Equal to variance
B. Less than variance
C. Greater than varince
D. None of these - 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 ?
A. Approximately normal because the sample size is small relative to the population size
B. Approximately normal because of the central limit theorem
C. Exactly
D. None of these alternatives is correct - Combine mean calculated by different given mean is ________?
A. n1x1 + n2x2x + _____ nuxu/n1 +n2 + ___ + nu
B. n1x1 + n2x2x + _____ nuxu/x1 + x2 + ____ x4
C. n1x1 + n2x2x + _____ nuxu/n1 + n2 + ___+ nu
D. ∑n1x/x1 - First moment about origin is always equal to _______________?
A. A.M.
B. variance
C. Zero
D. None of these - Mean deviation is equal to 4/5 of the _________ manipulation?
A. Quartile deviation
B. Range
C. Standard deviation
D. Variance - If third moment about mean is equal to zero, then distribution is ______________?
A. Negatively skewed
B. Symmetrical
C. positively skewed
D. None of these - γxy is always equal to_____________?
A. γyx
B. -γyx
C. γx
D. γo2
