' संक्षिप्त '

For the cumulative distribution function

the upper quartile point is

For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:

Which option is incorrect?

Which of the following is NOT a way of the sampling?

The interquartile range excludes ___ of the values.

If the difference between the rank of the 4 observations are 2.5, 0.5, -1.5, -1.5, then Spearman's rank correlation coefficient equals to:

For a random variable x, the central moments (µi) of all order exist. The square of (2j + 1)^th   moment (µ²2j+1) is

If mean and median of the distribution are 12 and 21, then the distribution

If A,B and C are arbitrary events, then P(A ∩ B ∩ C) equals to: