A student is preparing to take a standardized exam.
She was told that she needs to get plenty of sleep the
night before the exam. She is interested in the
relationship between the number of hours of sleep a
student gets before the exam and the score earned on
the exam. She collects information from 10 other
students who have already taken the exam as shown
in the table.
Amount of
Sleep (Hours)
3
7.5
7.5
4
8.5
2
5
4.5
Mark this and return
Score
30
28
32
20
21
21
23
24
21
Based on the residual plot, is the linear model
appropriate?
4
O No, there is no clear pattern in the residual plot.
OYes, there is no clear pattern in the residual plot.
O No, the student who got the most sleep had a
negative residual
33.57
OYes, there are more negative residuals (6) than
positive residuals (4).
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