Chapter 3.1, Problem 31PE

(a)

To determine

To graph: The data points for male and female in the same graph when data in table given below shows the percent of male and female who have completed $4$ or more years of college education for selected years, where, x represents the number of years since $1960$ and y represents percent of male and female who have completed $4$ or more years of college education.

$\begin{array}{cccc}\text{Year}& x& \text{Percent, }y\text{ Men}& \text{Percent},y\text{ women}\\ 1960& 0& 9.7& 5.8\\ 1970& 10& 13.5& 8.1\\ 1980& 20& 20.1& 12.8\\ 1990& 30& 24.4& 18.4\\ 2000& 40& 27.8& 23.6\\ 2005& 45& 28.9& 26.5\\ 2010& 50& 29.9& 28.8\end{array}$

(b)

To determine

Whether the percent of men with $4$ or more years of college is increasing or decreasing.

(c)

To determine

Whether the percent of women with $4$ or more years of college is increasing or decreasing.