IQ and school GPA. The least-squares line for predicting school GPA from IQ score, based on the

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IQ and school GPA. The least-squares line for predicting school GPA from IQ score, based on the 78 students plotted in Figure 14.10

(page 302), is GPA = −3.56 + (0.101 × IQ)

Explain in words the meaning of the slope b = 0.101. Then predict the GPA of a student whose IQ score is 115.

328 CHAPTER 15 Describing Relationships: Regression, Prediction, and Causation

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Statistics Concepts And Controversies

ISBN: 9781429277761

7th Edition

Authors: David S Moore, William I Notz

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