Question: Figure A shows a scatterplot for the number of semesters that students have attended a community college and the number of credits they have accumulated.

Figure A shows a scatterplot for the number of semesters that students have attended a community college and the number of credits they have accumulated. Figure B shows a residual plot of the same data. Is the linear regression model appropriate for these data? Why or why not? Assume the observations are independently measured.

Scatterplot 140 120 100 80 40 20 0 1 2 3 4 5 6 7 8 9 Semesters Residual Plot 40 1 10 -10 30 -40 -50 0 2 5 Semesters

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