AP®︎ Statistics: Topic 5.4 Flashcards

Master key terms and definitions for Topic 5.4 of AP Statistics – Residuals to help you prep for quizzes and the AP exam.

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Term

Residual

Definition

Observed minus predicted response: residual = y − ŷ. Positive means the model underpredicts, negative means it overpredicts, and 0 means the point lies on the regression line

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Residual
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Observed minus predicted response: residual = y − ŷ. Positive means the model underpredicts, negative means it overpredicts, and 0 means the point lies on the regression line

5.4.B5.4.B.1
Residual Plot
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Scatterplot of residuals versus x-values or predicted values ŷ, used to check whether a linear model is appropriate

5.4.C5.4.C.1
Residual Plot Interpretation
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Apparent randomness around 0 supports a linear model; a clear curved or other systematic pattern suggests a linear model is not appropriate

5.4.C5.4.C.3