Question 5.61

31. Figure 5.32 at the top of this page shows boxplots of the incomes of a large sample of people who have a high school diploma but no further education and another large group of people with a bachelor’s degree but no higher degree. The data come from a Census Bureau survey and represent all people aged 25 to 64 in the United States. Because there are a few extremely high incomes, the boxplot leaves out the highest 5% in each group. Based on the plot, compare the distributions of income for these two levels of education. Comment on both center and variability.

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Figure 5.34: Figure 5.32 Boxplots comparing the incomes of full-time workers aged 25 to 64 years at two levels of education. The top 5% of incomes in each group are omitted.

31.

The income distribution for bachelor's degree holders is generally higher than for high school graduates: The median for bachelor's is greater than for high school. The bachelor's distribution has much more variability, especially at the high-income end but also between the quartiles.