The mean deviation about the mean for the following data is Class Interval 0 - 4 4 - 8 8 - 12 12 - 16 Frequency 4 3 2 1

Question

The mean deviation about the mean for the following data is Class Interval 0 - 4 4 - 8 8 - 12 12 - 16 Frequency 4 3 2 1, 6, 3 . 6, 3 . 2, 10

MARKS App · Accepted Answer

f i f i x i f i x i x i - x f i x i - x 4 0-4 2 8 4 16 3 4-8 6 18 0 0 2 8-12 10 20 4 8 1 12-16 14 14 8 8 10 60 32 x = ∑ f i x i N = 60 10 = 6 M . D . = ∑ i = 1 4 f i x i - x N = 32 10 = 3 . 2

Class Interval	$0 - 4$	$4 - 8$	$8 - 12$	$12 - 16$
Frequency	$4$	$3$	$2$	$1$

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$f_{i}$	$f_{i}$	$x_{i}$	$f_{i} x_{i}$	$\|x_{i} - x\|$	$f_{i} \|x_{i} - x\|$
4	0-4	2	8	4	16
3	4-8	6	18	0	0
2	8-12	10	20	4	8
1	12-16	14	14	8	8
10			60		32