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TASMathematics ApplicationsQuick questions
Unit 3
Quick questions on Residual Analysis - TCE Mathematics Applications (Tasmania)
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is predict, then subtract?Show answer
The actual value is 2 units above the line, so the model under-predicts this point by 2.
What is the residual plot?Show answer
A residual plot graphs each residual (vertical axis) against the explanatory variable (horizontal axis). It magnifies the leftover pattern that the eye cannot see in the original scatterplot.
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