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Exercise

Interpreting residuals

Let's automate this process for all 21K rows in house_prices to obtain residuals, which you'll use to compute the sum of squared residuals: a measure of the lack of fit of a model. After computing the sum of squared residuals, you will answer the following question:

Which of these statements about residuals is incorrect?

Instructions 1/3

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Apply the relevant wrapper function to automate computation of fitted/predicted values and hence also residuals for all 21K houses using model_price_2.