If the mean of the frequency distribution Class: 0-10 10-20 20-30 30-40 40-50 Frequency: 2 3 x 5 4 is 28 , then its variance is _______. [10-Apr-2023 shift 1]

JEE Mains 10-Apr-2023 Shift 1 Solved Paper

Section: Mathematics

Question : 26 of 90

Marks: +1, -0

If the mean of the frequency distribution

Class:	0-10	10-20	20-30	30-40	40-50
Frequency:	2	3	x	5	4

is 28 , then its variance is _______.

[10-Apr-2023 shift 1]

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