1. Will the r2 of the regression increase, decrease, or stay about the same if the marked point is added to a regression?5

    2. How will adding the marked point to the regression affect the estimated slope and intercept?6

Extrapolating Prediction Intervals

The presence of a leveraged outlier also affects prediction. Consider predicting the cost to the contractor of building the 875-square-foot addition. With the outlier, regression predicts the ...

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