How good the regression model fits the sample data? 1. What percent of variability of the Risk of developing Emphysema can be explained by the regression model? 2. What is the percent error (random, and systematic such as model misspecifications) of the model?
Added by Jes-S W.
Step 1
- Obtain predicted values y_hat from the regression model for each observation. - Compute the sample mean of y, y_bar. - Note the number of observations n (or sample size). Show more…
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