The coefficient of variation of the following distribution is Class interval 0 - 5 5 - 10 10 - 15 15 - 20 20 - 25 Frequency 4 1 10 3 2

AP EAMCET Engineering 23 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 36 of 160

Marks: +1, -0

The coefficient of variation of the following distribution is

Class interval	0 - 5	5 - 10	10 - 15	15 - 20	20 - 25
Frequency	4	1	10	3	2

ClassInterval	(fi)	xi	xi fi	\|x−xi\|
0-5	4	2.5	10	9.5
5-10	1	7.5	7.5	4.5
10-15	10	12.5	0.5	125
15-20	3	17.5	5.5	52.5
20-25	2	22.5	45	10.5
	N=∑fi=20		∑xi fi=240

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