A scatterplot with regression line is shown in Figure 9.7 for a regression model using Verbal SAT
Question:
Figure 9.7
(a) Use the scatterplot to determine whether we should have any significant concerns about the conditions being met for using a linear model with these data.
(b) Use the fitted model to predict the GPA of a person with a score on the Verbal SAT exam of 650.
(c) What is the estimated slope in this regression model? Interpret the slope in context.
(d) What is the test statistic for a test of the slope? What is the p-value? What is the conclusion of the test, in context?
(e) What is R2? Interpret it in context.
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Related Book For
Statistics Unlocking The Power Of Data
ISBN: 9780470601877
1st Edition
Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock
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