Question: 1. The ___ _ ___, R2, measures the proportion of total variation in the response variable that is explained by the leastsquares regression line. 2.

1. The _____ _____ _____, R2, measures the proportion of total variation in the response variable that is explained by the leastsquares regression line.
2. Total deviation = _____ deviation + _____ deviation
3. A _____ _____ is a scatter diagram with the residuals on the vertical axis and the explanatory variable on the horizontal axis.

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