Chapter 4.1, Problem 4.24E

(a)

To determine

To find out from the pairs of variable that it shows large negative correlation, a large positive correlation or a small correlation.

Answer to Problem 4.24E

Large negative correlation.

Explanation of Solution

It is given that the age of second hand cars and their prices.

It shows large negative correlation, because as the age increases, the price should decrease.

(b)

To determine

To find out from the pairs of variable that it shows large negative correlation, a large positive correlation or a small correlation.

Answer to Problem 4.24E

Large negative correlation.

Explanation of Solution

It is given that the weight of the new cars and their gas mileages.

It shows large negative correlation, because at the weight increases, the gas mileages should decrease.

(c)

To determine

To find out from the pairs of variable that it shows large negative correlation, a large positive correlation or a small correlation.

Answer to Problem 4.24E

Large positive correlation.

Explanation of Solution

It is given that the heights and weights of adult men.

It shows large positive correlation, because as the height of a man increases, the weight should also increase.

(d)

To determine

To find out from the pairs of variable that it shows large negative correlation, a large positive correlation or a small correlation.

Answer to Problem 4.24E

Small correlation.

Explanation of Solution

It is given that the heights and IQ scores of adult men.

It shows small correlation, because the height and the IQ scores are not correlated.

(e)

To determine

To find out from the pairs of variable that it shows large negative correlation, a large positive correlation or a small correlation.

Answer to Problem 4.24E

Large positive correlation.

Explanation of Solution

It is given that the heights of daughters and the heights of their mothers.

It shows large positive correlation, because the taller the mothers are, the taller the daugthers will be too.