Exam 3 Answer Key – Solutions to Form B appear next. You can find the corresponding questions in Forms A and D to figure out how to do the problems. Form B 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. D E C A D E D or A B C or B E D A C C B D D E C A A B A C D B E A D A A A D 33-37 1pt each E A B C Form A 1. E 1-5 1pt each 2. A 3. D 4. B 5. C 6. C 7. A 8. E 9. E 10. B 11. E 12. D 13. A 14. C 15. D 16. D 17. D 18. E 19. D 20. A 21. A 22. B 23. C 24. C or E 25. E 26. A or D 27. B 28. B 29. A 30. B 31. D 32. A or C (TYPO) 33. A 34. B 35. A 36. C 37. D Form D 1. A 1-5 1pt each 2. D 3. C 4. B 5. E 6. A 7. C 8. E 9. D 10. C 11. A 12. E 13. E 14. B 15. D 16. A 17. A 18. D 19. D 20. D 21. E 22. C or E 23. C 24. B 25. A or D 26. B 27. B 28. E 29. C 30. A 31. B 32. B D correction 33. B 34. C 35. B 36. A 37. D NOTE: For the model selection problem I decided to give credit to students who said the model with 2 variables is better. Even though its R2 adjusted is lower, it’s only marginally so, and it is a more parsimonious model.