11.45. In the study mentioned in the previous exercise, a separate model did not contain interaction terms.

The best predictor of attitudes toward homosexuality was educational level, with an estimated standardized regression coefficient of 0.21. The authors also reported, "Controlling for other variables, an additional year of education completed was associated with a .09 rating unit increase in attitudes toward homosexuality." In comparing the effect of education with the effects of other predictors in the model, such as the age of the subject, explain the purpose of estimating standardized coefficients. Explain how to interpret the one reported for education.