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

question 150

Multiple Choice

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 Y = % Passing as the dependent variable, X₁ =% Attendance, X ₂ = Salaries and X₃ = Spending:

-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.

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Definitions:

Chromosomes

Structures located within the nucleus of a cell, composed of DNA and proteins, that carry genetic information in the form of genes.

Genes

The basic biological units of heredity located on chromosomes, containing the instructions for the development, functioning, growth, and reproduction of all known organisms.

Fraternal

pertaining to brothers; showing a close and supportive relationship like that between brothers.

Fertilization

the process of a sperm cell uniting with an egg cell, resulting in the formation of a zygote and the beginning of pregnancy.