Chapter 4.1, Problem 4.5E

(a)

To determine

To explain why is the response variable the percent of males that return rater that the number of males that return.

Explanation of Solution

The response variable the percent of males that return rater that the number of males that return because the percents are easier to compare than the number of males, because the males can become infinitely large, while the percents always have to be between $0\%\text{ and }100\%$ .

(b)

To determine

To construct a well labeled scatter plot.

Explanation of Solution

The scatter plot for this question is as follows:

  

(c)

To determine

To describe the pattern in the above scatter plot and do this data support the theory that a small percent of birds survived following a successful breeding season.

Explanation of Solution

By looking at the scatter plot in the part (b), we can say that there is a descending pattern obvious in the graph. Thus a smaller percent of births survive if there number of breeding pairs is greater, which is thus in support of the theory.