A survey was completed and the following two wage classes

A survey was completed and the following two wage classes were used: ($4 - $7) and ($7 - $10). What is the class interval for these wage classes?

a. 2

b. 5

c. 4

d. 3

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A survey was completed and the following two wage classes : a survey was completed and the following two wage classes were used 4 - 7 and 7 - 10. what is the class interval for

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