Question

Find the mean.
Class interval
10-25 25-40
40-55
55-70
70-85
85-100
2
3
7
6
6
6.
please solve step by step
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Answer 1

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It is defined as the difference between the upper-class limit and the lower class limit. Class Interval = Upper-Class limit – Lower class limit. In statistics, the data is arranged into different classes and the width of such class is called class interval.