Practice with Bivariate Regression
Practice with Bivariate Regression
1. Here’s the output from an analysis using GREA to predict 1st year GPA
2. Here’s the output from using undergraduate GPA to predict GREQ
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a. Is this a useful predictor?
b. Interpret the regression weight for GREQ
c. Write out the regression formula
y’ = (.00464 * GREQ) + .634
a. Is this a useful predictor?
d. Interpret the regression weight for undergraduate gpa
If GPA increase by 1, GREQ is expected to increase by 40.66.
e. Write out the regression formula
y’ = (40.66 * GREQ) + 306.359
Yes, the correlation is significant
If GREQ increases by 1, GRE is expected to increase by .00466.
Yes, the correlation is significant
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