34.6 Looking at Two Variables Together: Correlation and Regression
Point 6 of 7
34.6.6 Predicting with Regression and Residuals
Core idea
Plug in x to get the prediction ŷ, the gap between actual and predicted is the residual, and small residuals mean a good fit
Module goal. Move from a single variable to paired data, describe correlation, fit a line, use it to predict, and understand that correlation is not causation
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