Use the following information to answer the question. A random sample of 30 couples who were also new home owners were asked to report the cost of their first house and their combined age when they married. The output of a regression analysis for predicting home cost from combined age is shown. Assume that the conditions of the linear regression model are satisfied.

-If the slope were 1, what would that say about the association?
A)If the slope were 1, it would mean that on average, for every additional year in combined age, the home cost would be $2,122.75 lower.
B)If the slope were 1, it would mean that on average, for every additional year in combined age, the home cost would be 1 dollar more.
C)If the slope were 1, it would mean that on average, for every additional year in combined age, the home cost would be $2,122.75 higher.
D)None of these.

Question

Use the following information to answer the question. A random sample of 30 couples who were also new home owners were asked to report the cost of their first house and their combined age when they married. The output of a regression analysis for predicting home cost from combined age is shown. Assume that the conditions of the linear regression model are satisfied.
 
-If the slope were 1, what would that say about the association?
A)If the slope were 1, it would mean that on average, for every additional year in combined age, the home cost would be $2,122.75 lower. 
B)If the slope were 1, it would mean that on average, for every additional year in combined age, the home cost would be 1 dollar more. 
C)If the slope were 1, it would mean that on average, for every additional year in combined age, the home cost would be $2,122.75 higher. 
D)None of these.

Quizplus · Accepted Answer

If the slope is 1, it indicates that for every unit increase in the independent variable (in this case, combined age), the dependent variable (home cost) increases by 1 dollar.

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