When the standard deviation is divided by the mean we get____.

The standard deviation of dustribution divided by the mean of the distribution and expressing in percentage is called _____.

When coefficient of variation is 50 and standard deviation is 10 then mean is _____.

A simple of 25 variates has mean 40 and standard deviation 5 and a second sample of 35 variates has mean 45 and the standard deviation 2. Find the mean and standard deviation of the two samples of variates , taken together.

The standard deviation is ….. To the mean deviation taken from the arithmetic mean

The standard deviation is ….. To the mean deviation taken from the arithmetic mean

In a binomial distribution , the probability of getting asuccess is 1/4 and the standard deviation is 3 . Then its mean is