Chapter 10.2, Problem 41E

Conditional Relative Frequencies In Exercises 37−42, use the contingency table from Exercises 33−36, and the information below.

Relative frequencies can also be calculated based on the row totals (by dividing each row entry by the row’s total) or the column totals (by dividing each column entry by the column’s total). These frequencies are conditional relative frequencies and can be used to determine whether an association exists between two categories in a contingency table.

41. What percent of U.S. adults ages 25 and over who have a degree are not in the labor force?

Contingency Tables and Relative Frequencies In Exercises 33−36, use the information below.

The frequencies in a contingency table can be written as relative frequencies by dividing each frequency by the sample size. The contingency table below shows the number of U.S. adults (in millions) ages 25 and over by employment status and educational attainment. (Adapted from U.S. Census Bureau)