Chapter 2.3, Problem 29E

The following crosstabulation shows household income by educational level of the head of household (Statistical Abstract of the United States: 2008).

1. a. Compute the row percentages and identify the percent frequency distributions of income for households in which the head is a high school graduate and in which the head holds a bachelor’s degree.
2. b. What percentage of households headed by high school graduates earn $75,000 or more? What percentage of households headed by bachelor’s degree recipients earn $75,000 or more?

	Household Income ($1000s)
Educational Level	Under 25	25.0–49.9	50.0–74.9	75.0–99.9	100 or more	Total
Not H.S. graduate	4207	3459	1389	539	367	9961
H.S. graduate	4917	6850	5027	2637	2668	22,099
Some college	2807	5258	4678	3250	4074	20,067
Bachelor’s degree	885	2094	2848	2581	5379	13,787
Beyond bach. deg.	290	829	1274	1241	4188	7822
Total	13,106	18,490	15,216	10,248	16,676	73,736

1. c. Construct percent frequency histograms of income for households headed by persons with a high school degree and for those headed by persons with a bachelor’s degree. Is any relationship evident between household income and educational level?