Introduction to Statistics and Data Analysis
5th Edition
ISBN: 9781305115347
Author: Roxy Peck; Chris Olsen; Jay L. Devore
Publisher: Brooks Cole
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Textbook Question
Chapter 5.3, Problem 42E
Both r2 and se are used to assess the fit of a line.
- a. Is it possible that both r2 and se could be large for a bivariate data set? Explain. (A picture might be helpful.)
- b. Is it possible that a bivariate data set could yield values of r2 and se that are both small? Explain. (Again, a picture might be helpful.)
- c. Explain why it is desirable to have r2 large and se small if the relationship between two variables x and y is to be described using a straight line.
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Introduction to Statistics and Data Analysis
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