A study was run to determine the relationship between the number of hours a coll

Question

A study was run to determine the relationship between the number of hours a college student works each week and their GPA. The least squares line was found to be 3.4-0.02r with0.57 Fill in the following blanks (a) Hours of work each week and GPA have a moderate | negative linear correlation (b) This means that students who work more hours tend to have lower GPAs than those who work less hours. (c) More specifically, on average for every additional hour of work each week, the GPA tends to be lowerby about (d) Students who do not work have an average GPA of (e) What would we predict the average GPA of students who work 20 hours a week to be? points.

Explanation / Answer

c) by about 0.02 points (from slope)

d) an average GPA of 3.4 ( by putting r=0 in above equaton)

e) predicted GPA =3.4-0.02*20=3

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