Residuals and model fit
Two-variable data and models · Stage 3
Recognize the pattern
Residual equals actual value minus predicted value.
Useful ruleresidual=actual−predicted
Build on: PSD-07
Try it before reading the solution
A model predicts 12, but the observed value is 15. Find the residual.
This teaching example is original and is not an official SAT question.
Reasoning
15−12=3; a positive residual means the model underpredicted.
Answer3
03 · Next step
See membership →Ready for adaptive practice
Practice questions remain in English, as on the SAT.