4
QuizMultiple Choice
Residuals
Question 4 • DRHS GA-Statistical Reasoning
An educator is interested in the relationship between how many hours students spend doing homework and the scores earned on exams. He gathers data from 12 students and calculates the least-squares regression line to be ŷ = 68.4 + 1.46x, where ŷ is the score on an exam and x is the number of hours spent doing homework. The residual plot is shown.
Answer
A
No, the residuals are relatively large.B
No, there is a clear pattern in the residual plot.C
Yes, there is no clear pattern in the residual plot.D
Yes, about half of the residuals are positive and half are negative.