Standard deviation of four observations `-1,0,1` and k is `sqrt(5)` then k will be

Standard deviation of -1, 0, 4 is

The standard deviation of the observation 5, 5, 5, 5, 5 is

If the standard deviation of the numbers -1, 0,1,k is sqrt(5) where k gt 0 , then k is equal to 2 sqrt(l) . The value of l is ________.

If the standard deviation of the numbers -1, 0,1,k is sqrt(5) where k gt 0 , then k is equal to 2 sqrt(l) . The value of l is ________.

If the standard deviation of the numbers -1, 0, 1, k is sqrt(5) " where " k gt 0 is equal to

If the standard deviation of the numbers -1, 0, 1, k is sqrt(5) " where " k gt 0 is equal to

The standard deviation of 20 observations is sqrt(5) . If each observation is multiplied by 2 , find the standard deviation and variance of the resulting observations.

If, s is the standard deviation of the observations x_(1),x_(2),x_(3),x_(4) and x_(5) then the standard deviation of the observations kx_(1),kx_(2),kx_(3),kx_(4) and kx_(5) is