SOLUTION: _____A regression analysis of students' college grade point averages (GPAs) and their high school GPAs found r^2 = 0.311 which of these is true ? I. High school GPA accounts for 3

Question 935305: _____A regression analysis of students' college grade point averages (GPAs) and their high school GPAs found r^2 = 0.311 which of these is true ?
I. High school GPA accounts for 31.1% of college GPA
II. 31.1% of college GPAs can be correctly predicted with this model
III. 31.1% of the variance in college GPA can be accounted for by the model
A) III Only B) II Only C) I only D) none E) I and II
*Could you please tell me step by step how to do the problem? Thank You so much for helping me !! :)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A regression analysis of students' college grade point averages (GPAs) and their high school GPAs found r^2 = 0.311 which of these is true ?
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R^2 is defined as the percent of variability in a data set
that is accounted for by a statistical model.
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I. High school GPA accounts for 31.1% of college GPA
II. 31.1% of college GPAs can be correctly predicted with this model
III. 31.1% of the variance in college GPA can be accounted for by the model
A) III Only B) II Only C) I only D) none E) I and II
----
Answer:: III
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Cheers,
Stan H.
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