LR2. I can explain what the residuals mean in ordinary least-squares (OLS) linear regression. The residual plot for the linear regression in LR1 is given below: Residual Plot for Evaluation score vs beauty -2.0 -1.0 0.0 0.5 1.0 Residual 4.0 4.1 4.2 4.3 4.4 Predicted Q1. What does a residual of zero mean here? (in terms of professors with an evaluation score and beauty average score) Q2. What does a residual of -1 mean here? Q3. What does a residual of +0.5 mean here?
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In OLS linear regression, residuals are the differences between the observed values of the dependent variable (in this case, evaluation score) and the predicted values obtained from the regression line. Show more…
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