Student's Final Grade

question 144

Essay

Student's Final Grade
A statistics professor investigated some of the factors that affect an individual student's final grade in her course.She proposed the multiple regression model ,where y is the final grade (out of 100 points),x₁ is the number of lectures skipped,x₂ is the number of late assignments,and x₃ is the midterm exam score (out of 100).The professor recorded the data for 50 randomly selected students.The computer output is shown below. THE REGRESSION EQUATION IS ​ ​ ​ S = 13.74 R−Sq = 30.0% ​ ANALYSIS OF VARIANCE ​ ​
-{Student's Final Grade Narrative} Interpret the coefficient b₁.

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Definitions:

Interval Estimate

A range of values derived from sample data within which a population parameter is estimated to lie, usually defined by two numbers representing the upper and lower limits.

Population Standard Deviation

A measure of the variability or dispersion of a population dataset, representing the square root of the variance.

Sample Size

The number of observations or data points collected in a subset of a population for the purpose of statistical analysis.

Employee Retention

Strategies or practices employed by organizations to prevent valuable employees from leaving their jobs.