For each class interval of the frequency distribution given, determine the class midpoint, the relative frequency, and

Question:

For each class interval of the frequency given, determine the class midpoint, the relative frequency, and the cumulative frequency.
Class Interval Frequency
20–under 25 ......... 17
25–under 30 ......... 20
30–under 35 ......... 16
35–under 40 ......... 15
40–under 45 ......... 8
45–under 50 ......... 6
Distribution
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