Chapter 3.1, Problem 17E

(a)

To determine

To explain: the wrong thing in the given case

Answer to Problem 17E

There is high correlation between the gender of American workers and their income.

Explanation of Solution

Given:

"There is high correlation between the gender of American workers and their income."

Correlation is the relationship between two quantitative variables. In this statement gender is categorical variable hence it is not possible to measure correlation between gender and their income.

(b)

To determine

To explain: the wrong thing in the given case

Answer to Problem 17E

It is not possible the value of correlation $r=1.09$

Explanation of Solution

Given:

"We found a high correlation $(r=1.09)$ between students’ ratings of faculty teaching and ratings made by other member."

Here value of correlation $r=1.09$ But the correlation r always a number between - 1 and 1 hence it is not possible the value of correlation $r=1.09$

(c)

To determine

To explain: the wrong thing in the given case

Answer to Problem 17E

It is not possible the value of correlation $r=0.23$ bushel.

Explanation of Solution

Given:

"The correlation between planning rate and yield of corn was found to be $r=0.23$ bushel."

Correlation $r$ is always a number - 1 and 1, $r$ itself has no unit of measurement. Hence it is not possible the value of correlation $r=0.23$ bushel.