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12.3 The Regression Equation
Least-squares line of best fit: computing its slope and intercept, the squared errors it minimizes, and what the correlation coefficient r reports.
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5 exercises
12.3 Exercise 3
Use regression to find the equation for the line of best fit.
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12.3 Exercise 5
What is the slope of the line of best fit? What does it represent?
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12.3 Exercise 7
What does an r value of zero mean?
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12.3 Exercise 9
When n = 100 and r = -0.89, is there a significant correlation? Explain.
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12.3 Exercise 11
Explain what it means when a correlation has an r2 of 0.72.
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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.