Question

8. (a) Find the arithmetic mean of the following frequency distribution by using step-deviation
method:
[CBSE 2005]
Class
4-8 8-12 12-16 16-20 20-24 24-28 28-32 32-36
No. of students
2.
12
15
25
18
12
13
3
(h) The following table cu​

Answer 1

Answer:

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Step-by-step explanation: