Question

1. Find out mean deviation and its coefficient of the following data:
Items
5 10 15 20 25 30 35 40
Frequency
8
16
18
22
14
9
6
7
​

Answer 1

Answer:

Frequency

Table

Explanation:

16 - 8 is equal to 8 difference between 16 - 8 is 8 Next

22 - 18 is 6 so difference between 20 - 18 is 6

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