2.62 Table 2.20 gives the median annual earnings (in constant 2000 dollars) of all wage and salary workers ages 25–34, by sex and educational attainment level (The Condition of Education, 2000).

a For bachelor’s degree or higher, plot earnings of male workers against the year and earnings of female workers against the year on the same plot. Describe and compare the trends observed.

b For grades 9–11, plot earnings of male workers against the year and earnings of female workers against the year on the same plot. Describe and compare the trend observed.

c Plot earnings of male workers against earnings of female workers for both the educational groups on the same plot. Describe and compare the trends observed.

d Plot earnings of male workers with a bachelor’s degree versus earnings of male workers with an education of grades 9–11. Describe the trend observed.

e Plot earnings of female workers with a bachelor’s degree versus earnings of female workers with an education of grades 9–11.

Describe the trend observed.