Question

show that mean square deviation is least when deviation are measured from the mean​

Answer 1

Answer:

Calculating the variance and standard deviation

First, determine n, which is the number of data values.

Second, calculate the arithmetic mean, which is the sum of scores divided by n. ...

Then, subtract the mean from each individual score to find the individual deviations.

Then, square the individual deviations.

follow these steps u will get ans.