5–7% of the AP exam. Key topics: Scatterplots: construction and interpretation, DUFS framework: direction, unusual features, form, strength, Correlation coefficient r: meaning and properties, Least-squares regression line (LSRL): equation ŷ = a + bx, Slope and y-intercept interpretation in context, Residuals: definition and computation (residual = observed − predicted), Residual plots: checking for linearity, Coefficient of determination r²: interpretation, Transformations for nonlinear data: logarithmic and power models.
Study guide content for this unit is being prepared. Check back soon for complete lesson notes, formula sheets, and worked examples.
