AP Statistics 5.4: Calculating Residuals
Calculate a residual by subtracting the predicted response from the observed response and use the result to locate unusual observations.
- Syllabus
- Effective Fall 2025
- Course
- AP Statistics
5.4.A—Calculate the differences between the observed and predicted values question 1
A biologist gathered data on the length, in millimeters (mm), and the mass, in grams (g), for 11 bullfrogs. The data are shown in Plot 1.
From the data, the biologist calculated the least-squares regression line for predicting mass from length. The least-squares regression line is shown in Plot 2.
Official question visual
From Plot 2, consider the residuals of the 11 bullfrogs.
Based on the plot, approximately what is the length and mass of the bullfrog with the largest absolute value residual?
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