For questions 1 - 5, refer to the table below.
1. The table above represents the ages and temperatures of 6 randomly selected adults. Find the value of the correlation coefficient. r = 0.485. r = 0.854. r = 0.584.
2. What is the critical value that corresponds to n = 6 and a 95% level of confidence. The critical value is 0.917. The critical value is 0.707. The critical value is 0.811.
3. Find a regression equation that best fits this data. y = 95.97 + 0.09x. y = 0.09 + 95.97x. y = 2.66x - 236.88.
4. What is the centroid. (24.5, 98.13). (98.13, 24.5). (25.1, 98.2).
5. What is the best predicted temperature for a person who is 25 years old? 98.60. 98.13. 96.20.
For questions 6 - 10, refer to the table below.
6. The table above represents a random sample of quarterback and team salaries from the 1991 season of the National Football League as reported by the Associated Press. The data was found at the DASL website http://lib.stat.cmu.edu/DASL/Datafiles/qbacksalarydat.html. NOTE: Salaries are in thousands. Find the value of the correlation coefficient. r = 0.6789 r = 0.6995 r = 0.7110
7. What is the critical value that corresponds to n = 10 and a 95% level of confidence.. 0.632. 0.765. 0.000.
8. Find a regression equation that best fits this data. y = 3.27x + 18145. y = 18145x + 3.27. y = 0.1409x - 1923.
9. What is the centroid. (21993.5, 1196.7). (1176.7, 21993.5). (10000.2, 20000).
10. What is the best predicted team salary for a QB who is makes $1700? Report answers in thousands. $20000. $23704. $21993.50
Copyright © 1998 Donna Tupper.
