The monthly salaries of a sample of 100 employees were rounded to the nearest $10. 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

Question

Quizplus · Accepted Answer

To condense the data into seven classes, we need to divide the salary range ($1,040 to $1,720) into seven intervals.

The range of the data is $1,720 - $1,040 = $680. To find the most convenient interval size, we can divide the range by the number of intervals we want (seven):

$680 ÷ 7 = $97.14

Since salaries were rounded to the nearest $10, it would be most convenient to round our interval size up to the nearest $10.

Thus, the best choice for the class interval is $100.

The Monthly Salaries of a Sample of 100 Employees Were