Which is the joint relative frequency for school children who plan to attend camp and have swimming lessons? Round the answer to the nearest percent.

4%

19%

33%

44%

Given a frequency table of a survey asking school children whether they are attending a summer camp, taking swimming lessons, or both.

Summer Plans

Camp No Camp Total

Swimming Lessons 42 32 74

No Swimming Lessons 18 4 22

Total 60 36 96

The relative frequency table is obtained from the frequency table by dividing each entry of the frequency table by the overall total of the frequency table.

The relative frequency table of the above frequency tale is given below.

Summer Plans (Relative Frequency)

Camp No Camp Total

Swimming

Lessons 42/96 = 0.44 = 44% 32/96 = 0.33 = 33% 74/96 = 0.77 = 77%

No Swimming

Lessons 18/96 = 0.19 = 19% 4/96 = 0.04 = 4% 22/96 = 0.23 = 23%

Total 60/96 = 0.63 = 63% 36/96 = 0.37 = 37% 96/96 = 1.0 = 100%

Therefore, the joint relative frequency for school children who plan to attend camp and have swimming lessons is 44%

The answer is the last one 44%.