The mean deviation about the mean for the following data is Class interval 0 - 10 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 Frequency 4 6 16 28 16 6 4

AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 36 of 160

Marks: +1, -0

The mean deviation about the mean for the following data is

Class interval	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50	50 - 60	60 - 70
Frequency	4	6	16	28	16	6	4

Class Interval	fi	xi	fixi	\|xi−35\|	fixi−35\|
0-10	4	5	20	30	120
10-20	6	15	90	20	120
20-30	16	25	400	10	160
30-40	28	35	980	0	0
40-50	16	45	720	10	160
50-60	6	55	33	20	120
60-70	4	65	260	30	120
Total	80		2800		800

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