Suppose that the slope of a regression line is 1.5. How should this number be interpreted?
A) The regression line crosses the vertical axis of the scatterplot at a value of 1.5.
B) The score of each case is 1.5 times higher on Y than on X.
C) For every unit of change in Y there is a change of 1.5 in X.
D) For every unit of change in X there is a change of 1.5 units in Y.

Question

Quizplus · Accepted Answer

The slope of a regression line indicates the change in the dependent variable (Y) for each unit change in the independent variable (X). A slope of 1.5 means that for every one unit increase in X, Y increases by 1.5 units.

Suppose That the Slope of a Regression Line Is 1