Question

Find the mean deviation from the mean for the data:

xi	5	7	9	10	12	15
fi	8	6	2	2	2	6

Answer 1

To find the mean deviation from the mean, firstly let us calculate the mean.

By using the formula,

xi	fi	Cumulative Frequency (xifi)	|di| = |xi – Mean|	fi |di|
5	8	40	4	32
7	6	42	2	12
9	2	18	0	0
10	2	20	1	2
12	2	24	3	6
15	6	90	6	36
	Total = 26	Total = 234		Total = 88