Chapter 12: Q.52 (page 719)
A point is removed, and the line of best fit is recalculated. The new correlation coefficient is . Does the point appear to have been an outlier? Why?
The point that is removed appears to have been an outlier.
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The table contains real data for the first two decades of flu cases reporting
Find the correlation coefficient.
Do you think a linear fit is best? Why or why not?
Enter your data into your calculator or computer. The pre- data should not be included. Why is that so?
A vacation resort rents SCUBA equipment to certified divers. The resort charges an up-front fee of and another fee of an hour.
Graph the equation from Exercise 12.2.
Use the following information to answer the next five exercises. A random sample of ten professional athletes produced the following data where is the number of endorsements the player has and is the amount of money made (in millions of dollars).
| x | y | x | y |
| 0 | 2 | 5 | 12 |
| 3 | 8 | 4 | 9 |
| 2 | 7 | 3 | 9 |
| 1 | 3 | 0 | 3 |
| 5 | 13 | 4 | 10 |
What is the slope of the line of best fit? What does it represent?
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