Question

10. Find the value of p for which the arithmetic
frequency mean of the following distribution
is 52.
Wages (in Rs)
Number of workers
10 - 20
5
20 - 30
3
30-40
4
40 - 50
P
50 - 60
2
60-70
6
70-80
13
(CBSE 2007)​

Answer 1

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