Find the mean deviation from the mean for the following data: Size:, 20, 21, 22, 23, 24 frequency, 6, 4, 5, 1, 4

Explanation

mean `(bar{X})=frac{1}{N} sum` fixi `=frac{433}{20}=21.65`

mean duiation ` =frac{1}{N} sum f_{i}|x_{i}-21.65|`

` =frac{1}{20} times 25=1.25`