Use the frequency distribution to find the (a) class width, (b) class midpoints, and (c) class boundaries.

Question:

Travel Time to Work (in minutes)

Class . . . . . . . . . . Frequency, f

0 –10 . . . . . . . . . . .188

11–21 . . . . . . . . . . 372

22–32 . . . . . . . . . .264

33 – 43. . . . . . . . . 205

44 –54. . . . . . . . . . 83

55 – 65 . . . . . . . . . 76

66 –76 . . . . . . . . . 32

Distribution
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