The standard deviation of a, a+d, a + 2d,….a + 2nd is

Find the mean deviation from the mean and the standard deviation of a,a+d,a+2d,….,a+2nd assume that dgt0.

Standard deviation of 1, 0, 2, 3, 4 is

Consider three observations a, b and c such that b=a+c. If the standard deviation of a+2, b+2, c+2 is d, then which of the following is true ?

If the standard deviation of 1, 2, 3, 4,…., 10 is sigma , then the standard deviation of 11, 12, 13, 14,….20 is

The mean deviation from mean of the observations a, a + d, a + 2d,… a + 2 nd is :

Find the standard deviation of {11, 7, 10, 13, 9} A. 1 B. 2 C. 4 D. 5

The standard deviation of a set of 50 items is 8. Find the standard deviation, if each item is multiplied by 2.