1. The ___ _ ___, R2, measures the proportion of total variation in the response variable that...

Question:

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.