Following is a set of 50 reading comprehension scores for a second grade class:
47 10 31 25 20
2 11 31 25 21
44 14 15 26 21
41 14 16 26 21
7 30 17 27 24
6 30 16 29 24
35 32 15 29 23
38 33 19 28 20
35 34 18 29 21
36 32 16 27 50
(1) Please create an ungrouped frequency distribution with the following columns:
Score Frequency Cumulative Frequency Relative Frequency (Percentage) Cumulative Relative Frequency (Cumulative Percentage)
(2) Next, please group the scores into five-unit intervals (five scores in each interval) and create a grouped frequency distribution as follows:
Score Interval of Width 5 Frequency