Twenty students were asked how many hours they worked per day. Their responses, in hours, are as follows: 5, 6, 3, 3, 2, 4, 7, 5, 2, 3, 5, 6, 5, 4, 4, 3, 5, 2, 5, 3.
Summarize the data by constructing the following for 5 classes:
(a) A frequency distribution
(b) A cumulative frequency distribution
(c) A cumulative relative frequency distribution
(d) A histogram
(e) What percentage of students worked 4 hours or less?
(f) What percentage of students worked more than 5 hours?
(g) What percentage of students worked between 4 to 7 hours (inclusive)?