Question

A statistics teacher asks her students how many hours, on average, they spend working for pay each week. the responses are: 21, 30, 0, 0, 15, 0, 15, 12, 10, 32.5, 0, 15, 10, 15, 5, and 25. a histogram starting at 0 hours and using bar widths of 10 would look like

Answer 1

There are 7 people who worked between 0-10 hours.  There are 5 people working more than 10 up to 20 hours.  There are 3 people working more than 20 up to 30 hours, and there is 1 person working more than 30 up to 40 hours.  The histogram is attached.