1. Return to the first regression we did with the NELS data. Regress 10th-grade GPA (FFUGrad) on...
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1. Return to the first regression we did with the NELS data. Regress 10th-grade GPA (FFUGrad)
on Parent Education (BYParEd) and Time Spent on Homework Out of School
(F1S36A2) (see the exercises in Chapter 2). Save the unstandardized residuals and predicted values. Use the residuals to test for linearity in the Homework variable and for the overall regression. Are the residuals normally distributed? Is the variance of the errors consistent across levels of the independent variables (to conduct this final analysis, I suggest you reduce the Predicted Grades variable into a smaller number of categories)?
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