THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 55

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor investigated some of the factors that affect an individual student's final grade in his course.He proposed the multiple regression model Y = β₀ + β₁X₁ + β₂X₂ + β₃X₃ + ε ,where Y is the final mark (out of 100),X₁ is the number of lectures skipped,X₂ is the number of late assignments,and X₃ is the mid-term test mark (out of 100).The professor recorded the data for 50 randomly selected students.The computer output is shown below.
The regression equation is
= 41.6 - 3.18x₁ - 1.17x₂ + 0.63x₃.

S = 13.74 R-Sq = 30.0%
ANALYSIS OF VARIANCE

-Interpret the coefficient b₁.

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Definitions:

Investment Account

An account that holds securities, cash, and other investments for investment purposes.

Investing

The act of committing money or capital to an endeavor with the expectation of obtaining an additional income or profit.

Compounded Annually

The process where interest earned in one period is added to the principal sum and then interest in the next period is calculated on the new total.

Ordinary Annuity

A series of equal payments made at regular intervals, such as monthly or annually, with the payments occurring at the end of each period.