SCENARIO 15-4
The superintendent of a school district wanted to predict the percentage of students passing a sixth-
grade proficiency test. She obtained the data on percentage of students passing the proficiency test
(% Passing), daily mean of the percentage of students attending class (% Attendance), mean teacher
salary in dollars (Salaries), and instructional spending per pupil in dollars (Spending) of 47 schools in
the state.
-Referring to Scenario 15-4, the residual plot suggests that a nonlinear model on %
attendance may be a better model.

Question

SCENARIO 15-4
The superintendent of a school district wanted to predict the percentage of students passing a sixth-
grade proficiency test. She obtained the data on percentage of students passing the proficiency test
(% Passing), daily mean of the percentage of students attending class (% Attendance), mean teacher
salary in dollars (Salaries), and instructional spending per pupil in dollars (Spending) of 47 schools in
the state. 
-Referring to Scenario 15-4, the residual plot suggests that a nonlinear model on %
attendance may be a better model.

Quizplus · Accepted Answer

The residual plot indicates a pattern, suggesting that the relationship between the variables may not be linear, and a nonlinear model might better capture the underlying trend.

SCENARIO 15-4 the Superintendent of a School District Wanted to Predict the Predict