statistics A northwestern distribution company surveyed

| January 30, 2017

Question
A northwestern distribution company surveyed 53 of its midlevel managers. The survey obtained the ages of these managers, which later were organized into the frequency distribution shown. Determine the class midpoint, relative frequency, and cumulative frequency for these data.

Class Interval

Frequency

20–under 25

8

25–under 30

6

30–under 35

5

35–under 40

12

40–under 45

15

45–under 50

7

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