The Amount of Hours Spent on the Computer Per Week

Essay

The amount of hours spent on the computer per week for a sample of 40 random people is given below:
$\begin{array}{cccccccccc} 3 & 3 & 5 & 5 & 7 & 7 & 7 & 8 & 10 & 10 \\ 10 & 12 & 12 & 13 & 14 & 14 & 14 & 14 & 15 & 15 \\ 15 & 15 & 15 & 16 & 17 & 18 & 18 & 18 & 20 & 21 \\ 21 & 21 & 21 & 21 & 22 & 23 & 25 & 25 & 25 & 28 \end{array}$
(a) Construct a frequency distribution for the data (include class, frequency, and cumulative relative frequency).
(b) Draw a histogram for the distribution.