SCENARIO 18-8 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. Following is the multiple regression output with as the dependent variable,
-Referring to Scenario 18-8, which of the following is a correct statement?
A)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class, mean Teacher salary, and instructional spending per pupil.
B)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class, mean Teacher salary, and instructional spending per pupil after adjusting for the number of Predictors and sample size.
C)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class holding Constant the effect of mean teacher salary, and instructional spending per pupil.
D)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class after Adjusting for the effect of mean teacher salary, and instructional spending per pupil.

Question

SCENARIO 18-8 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. Following is the multiple regression output with  as the dependent variable,   
-Referring to Scenario 18-8, which of the following is a correct statement?
A)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class, mean Teacher salary, and instructional spending per pupil. 
B)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class, mean Teacher salary, and instructional spending per pupil after adjusting for the number of Predictors and sample size. 
C)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class holding Constant the effect of mean teacher salary, and instructional spending per pupil. 
D)62.88% of the total variation in the percentage of students passing the proficiency test can be explained by daily mean of the percentage of students attending class after Adjusting for the effect of mean teacher salary, and instructional spending per pupil.

Quizplus · Accepted Answer

The multiple regression output shows a value of 0.6288 for R-squared, which indicates that 62.88% of the total variation in the percentage of students passing the proficiency test can be explained by the three predictor variables: daily mean of the percentage of students attending class, mean teacher salary, and instructional spending per pupil. The multiple regression output states that the R-squared value is 0.6288, which means that 62.88% of the total variation in the percentage of students passing the proficiency test can be explained by the combination of daily mean of the percentage of students attending class, mean teacher salary, and instructional spending per pupil.

SCENARIO 18-8 the Superintendent of a School District Wanted to Predict