Question

5. Find the mean of the distribution Class Interval Frequency
Class Interval
Frequency
1-3
3-5
22
5-7
7-10
frequency
9 22 27 17

​

Answer 1

Class interval frequency xi fixi

1-3 9 2 18

3-5 22 4 88

5-7 27 6 162

7-10 17 8 136

Σfi=75 Σfixi=404

Mean = Σfixi/Σfi

=404/75

=5.38

Answer 2

Answer:

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