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Define the distribution of the residuals

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Question: Distribution of the residuals. Some statistical methods require that the residuals from a regression line have a Normal distribution. The residuals for the nonexercise activity example are given in Exercise. Is their distribution close to Normal? Make a Normal quantile plot to find out.

Exercise: Find the sum of the residuals. Here are the 16 residuals for the NEA data rounded to two decimal places:

1132_Residuals.png

Find the sum of these residuals. Note that the sum is not exactly zero because of roundoff error.

Reference no: EM131745490

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