Question

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?

Answer 1

1720 - 1040 = 680
680/7 = 97.1

I would put them in intervals of 100