(b)The mean and standard deviation of 6 observations are 8 and 4 respectively.If each observation is multiplied by 3,find the new mean and new standard deviation of the resulting observations.

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations.

Suppose that mean and standard deviation of 6 observations are 8 and 4 respectively . Let each observation be multiplied by 3 Find the standard deviation of the resulting observations.

Suppose that mean and standard deviation of 6 observations are 8 and 4 respectively . Let each observation be multiplied by 3. Find the new mean of the resulting observations

The variance of 20 observations is '5 .' If each observation is multiplied by 2, find the new variance of the resulting observations.

(b)Find the standard deviation for the following data:

Find the mean and standard deviation using short-cut method

The mean and variance of 7 observations are 8 and 16 respectively . If five of the observations are 2,4,10,12,14 find the remaining two observations.

The mean and variance of 7 observations are 8 and 16 respectively. If five of the observations are '2,4,10,12,14'. Find the remaining two observations:

Calculate the mean, variance and standard deviation for the following distribution.