(a) The mean of the following frequency distribution is 25. Find the value of f. Class : 0-10 10-20 20-30 30-40 40-50 Frequency : 5 18 15 {\f} 6 OR (b) Find the mean of the following data using assumed mean method: Class : 0-5 5-10 10-15 15-20 20-25 Frequency : 8 7 10 13 12

CBSE Class 10 Math 2022 Delhi Set 1 Paper (Term II)

Question : 9 of 14

Marks: +1, -0

(a) The mean of the following frequency distribution is 25. Find the value of

f

Class :	$0-10$	$10-20$	$20-30$	$30-40$	$40-50$
Frequency :	5	18	15	${\f}$	6

OR
(b) Find the mean of the following data using assumed mean method:

Class :	$0-5$	$5-10$	$10-15$	$15-20$	$20-25$
Frequency :	8	7	10	13	12

Solution:

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