Elementary Statistics (13th Edition)
13th Edition
ISBN: 9780134462455
Author: Mario F. Triola
Publisher: PEARSON
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Textbook Question
Chapter 10.5, Problem 3BSC
Super Bowl and R2 Let x represent years coded as 1, 2, 3,... for years starting in 1980, and let y represent the number, of points scored in each Super Bowl from 1980. Using the data from 1980 to the last Super Bowl at the time of this writing, we obtain the following values of R2 for the different models: linear: 0.147; quadratic: 0.255; logarithmic: 0.176; exponential: 0.175; power 0.203. Based on these results, which model is best? Is the best model a good model? What do the results suggest about predicting the number of points scored in a future Super Bowl game?
3. Interpreting R2 In Exercise 2, the quadratic model results in R2 = 0.255. Identify the percentage of the variation in Super Bowl points that can be explained by the quadratic model relating the variable of year and the variable of points scored. (Hint: See Example 2.) What does the result suggest about the usefulness of the quadratic model?
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Chapter 10 Solutions
Elementary Statistics (13th Edition)
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