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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) :
-Referring to Table 15-4,which of the following models should be taken into consideration using the Mallows' Cp statistic?
Rational Persuasion
A tactic in influencing others by using logical arguments and factual evidence to convince them of a point of view.
Coalition Builders
Individuals or organizations that work to bring together diverse groups for a common cause or to achieve a specific goal.
Organizational Member
An individual who belongs to and contributes to a group or organization, adopting its goals and participating in its activities.
Absenteeism
The practice of being absent from work or school without a good reason, which can negatively impact productivity and morale.
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