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Y = 1.450 + 0.325X 1 is Model A , R-squared = 0.033 Y = 0.920 + 0.377X 1 + 0.641X 2 + 0.377X 3
Y = 1.450 + 0.325X1 is Model A , R-squared = 0.033
Y = 0.920 + 0.377X1 + 0.641X2 + 0.377X3 + 0.012X4 is Model B, adjusted R-squared = 0.185
- Compare the coefficient of X1 in Model A and Model B. Explain carefully why the results are different.
- Interpret the R-squared in Model A and adjusted R-squared in Model B. Which one is a better model? Why?
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