THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 31

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

-What is the coefficient of determination? What does this statistic tell you?

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Definitions:

Uric Acid

A waste product formed from the breakdown of purines, excreted in urine, high levels of which can lead to gout and kidney stones.

Protonephridia

Protonephridia are excretory structures found in some invertebrates, such as flatworms, consisting of a network of dead-end tubules connected to external openings.

Flatworm

A group of simple, soft-bodied invertebrates that belong to the phylum Platyhelminthes, characterized by their flattened bodies and lack of specialized respiratory and circulatory systems.

Ammonia

A compound of nitrogen and hydrogen (NH3) that is a byproduct of the metabolism of animals and is used in various industrial processes.