TABLE 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.
Let Y = % Passing as the dependent variable,X1 = % Attendance,X2 = Salaries and X3 = Spending.
The coefficient of multiple determination ( )of each of the 3 predictors with all the other remaining predictors are,respectively,0.0338,0.4669,and 0.4743.
The output from the best-subset regressions is given below: Following is the residual plot for % Attendance:
Following is the output of several multiple regression models:
Model (I): Model (II):
Model (III):
-True or False: Referring to Table 15-4,the residual plot suggests that a nonlinear model on % attendance may be a better model.
Correct Answer:
Verified
Q23: TABLE 15-3
A chemist employed by a pharmaceutical
Q24: TABLE 15-3
A chemist employed by a pharmaceutical
Q25: The logarithm transformation can be used
A)to overcome
Q29: The logarithm transformation can be used
A)to overcome
Q33: True or False: In stepwise regression, an
Q36: True or False: In data mining where
Q39: True or False: The goals of model
Q48: TABLE 15-4
The superintendent of a school district
Q49: TABLE 15-4
The superintendent of a school district
Q58: Which of the following will not change
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