Question

From 1975 to 1986, the general social survey asked its participants if they favored or opposed capital punishment. A least squares regression line was calculated to predict the percent that favored the death penalty based on the year. The least squares regression equation is yhat= -1859+0. 9753x. Interpret the slope for this equation.

Answer 1

Based on the information given, it should be noted that the slope cannot be interpreted as the equation makes no sense for the model.

Interpretation of the slope.

From the information given, the explanatory variable x was the year that the observations were taken.

In this case, the values are the integer number between 1975 and 1986. The y-intercept of the equation makes no sense for the prediction as it's not in the range of the explanatory data.

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