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Unformatted text preview: to a change of r standard deviations in y. The coefficient of determination is r^2. A residual is the observed value predicted y or y - You must become aware of any outliers or extreme observations in regression Correlation and regression are closely connected. You can examine the fit of a regression line by studying the residuals. You have to look for influential observations, they are often outliers in the x direction, but they need not have large residuals....
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- Fall '08