The standard deviation of the data is ……….of any change in origin, but is ………at change of scale.

The standard deviation of the data 6,5,9,13,12,8,10 is ……..

The mean deviation of the data is ……… when measured from the median.

Find the standard deviation for the following data:

Find the standard deviation of the first n natural numbers.

The standard deviation for the following data is n = 10 , sum x = 60, sum x^2 = 1000

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

Find the mean deviation about the mean for the data in

the mean and standard deviation of some data for the time taken to complete a test are calculated with the following results: Number of observations = 25, mean = 18.2 seconds , standard deviation = 3.25 seconds. Further , another set of 15 observations x_1,x_2,........,x_15 , also in seconds , is now available and we have sum_(i=1)^15 x_i = 279 and sum_(i=1)^15 x_i^2 = 5524. Calculated the standard deviation based on all 40 observations.

Standard deviations for first 10 natural numbers is