Figure A shows a scatterplot with the regression line for pulse rates for a large number of students in a college statistics class before and after running in place for two minutes. Figure B shows the residual plot of the data. Figure C shows a QQ plot of the residuals. Is the linear regression model appropriate for these data? Why or why not? Assume the observations are independently measured.

Transcribed Image Text:

Scatterplot 140 130 120 110 100 90 2 80 70 100 60 Pulse before Run (beats per minute) Residual Plot 20 -20 90 100 60 Pulse before Run (beats per minute) QQ Plot 30 20 -2 Normal Quantiles