Question

The following data set contains the test one score of all student in a statistic class

Answer 1

To compute the cumulative frequencies, we need to add the frequency values as follows:

Score Cumulative Frequency

50 - 59 4

50 - 69 6 = 4 + 2

50 - 79 13 = 6 + 7

50 - 89 23 = 10 + 13

50 - 59 30 =23 + 7