Business
posted by Tykrane .
The monthly salaries of a sample of 100 employees were rounded to the nearest ten dollars. They ranged from a low of $1,040 to a high of $1,720. If we want to condense the data into seven classes, what is the most convenient class interval?
A. $50
B. $100
C. $150
D. $200
E. none of the above

The difference between the low and the high is $680. If we want to divide that difference into seven classes, $680/7 is close to $100. An interval of $100 would make the most sense here.
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