If the variance of the following frequency distribution : Class : 10–20 20–30 30–40 Frequency : 2 x 2 is 50, then x is equal to ____. [4 Sep 2020 Shift 2]

JEE Mains 04-Sep-2020 Shift 2 Solved Paper

Section: Mathematics

Question : 75 of 75

Marks: +1, -0

If the variance of the following frequency distribution :

Class	:	10–20	20–30	30–40
Frequency	:	2	x	2

is 50, then x is equal to ____.

[4 Sep 2020 Shift 2]

Go to Question:

Prev Question

xi	:	15	25	35	or	−10	0	10
fi	:	2	x	2	‌	2	x	2