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Exhibit 2-1The number of hours worked (per week) by 400 statistics students are shown below.Number ...

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Exhibit 2-1The number of hours worked (per week) by 400 statistics students are shown below.Number ...

Exhibit 2-1

The number of hours worked (per week) by 400 statistics students are shown below.

Number of Hours	Frequency
0 - 9	20
10 - 19	80
20 - 29	200
30 - 39	100

Refer to Exhibit 2-1. The class width for this distribution

▸

is 9

▸

is 10

▸

is 39, which is: the largest value minus the smallest value or 39 - 0 = 39

▸

varies from class to class

Textbook

Essentials of Statistics for Business and Economics

Edition: 7^th

Authors: Anderson, Sweeney, Williams, Camm, Cochran

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