Question

Find mean and median.
Q8. Find the variance of the following data set.
Y=11,13,25, 15, 12, 18, 17,23,20,16​

Answer 1

Answer:

Solutions of Questions on Page Number : 360

Q1 :Find the mean deviation about the mean for the data

4, 7, 8, 9, 10, 12, 13, 17

Answer :

The given data is

4, 7, 8, 9, 10, 12, 13, 17

Mean of the data,

The deviations of the respective observations from the mean are

-6,-3, -2, -1, 0, 2, 3, 7

The absolute values of the deviations, i.e., are

6, 3, 2, 1, 0, 2, 3, 7

The required mean deviation about the mean is