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CBSE Class 10 Answered

Find the mean of the following frequency distribution using assumed mean method: Classes 2 - 8 8 - 14 14 - 20 20 - 26 26 - 32 Frequency 6 3 12 11 8
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Classes

fi

xi

di = xi - A

di fi

2 - 8

6

5

-12

-72

8 - 14

3

11

-6

-18

14 - 20

12

(17) = A

0

0

20 - 26

11

23

6

66

26 - 32

8

29

12

96

Here,

A = 17

= 17 + 1.8 = 18.8

Answered by | 04 Jun, 2014, 03:23: PM
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