Question

The table below gives the percentage of girls in higher secondary science stream of rural areas of various states of India. Find the mean percentage of girls by step-deviation method :
Percentage of girls
15-25
25-35
35-45
45-55
55-65
65-75
75-85

Number of states
6
10
5
6
4
2
2

Answer 1

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Answer 2

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Answer:

The answer is 41.71