The two-way table represents data from a survey asking schoolchildren whether they are attending a summer camp, taking swimming
lessons, or both. 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.
The joint relative frequency values are the top-left four squares, or the intersection of 2 variables, divided by the total number in the bottom-right corner, which is 96.
Find the intersection of Camp and Swimming lessons. The number is 42. Divide this number by 96: 42 ÷ 96 = 43.75%