11. False. Quantitative variables describe how 48. (A) Movie Title, Creative Type, MPAA much or how many of something there is. rating 12. True (B) Year, Ticket Sales, Tickets Sold 13. True (C) Movie Title, Creative Type 14. True (D) MPAA Rating Practicing the Skills Extending the Concepts 15. Qualitative 49. (A) Ordinal 16. Quantitative (B) Yes, it a more favorable opinion 17. Quantitative of the construction of a new shopping 18. Qualitative mall. 19. Quantitative (C) No, we cannot say opinion that Jason’s 20. Quantitative is twice as favorable. 21. Qualitative (D) Quantitative 22. Qualitative (E) Yes, the Brenda’s answer 23. Qualitative ownership of more cars, and 24. Quantitative the ownership of twice as many cars. 25. Ordinal (F) Nominal 26. Nominal (G) neither No, Brenda’s answer 27. Ordinal more of something nor twice as much of 28. Ordinal something. 29. Nominal 30. Nominal 31. Nominal Section 1.3 32. Ordinal 33. Continuous Exercises 1 4 are the Check Your – 34. Continuous Understanding exercises for this section. 35. Discrete Answers to these exercises are on page 26. 36. Discrete Continuous 37. Understanding the Concepts 38. Discrete Discrete randomized 39. 5. 40. Continuous 6. double-blind observational 7. 8. confounder Working with the Concepts prospective 9. 41. Ordinal 10. cohort 42. Discrete 11. True 43. Ordinal 12. False. A confounder makes it harder to draw 44. Quantitative conclusions from a study. 45. Nominal 46. Ordinal 13. False. In a randomized experiment, subjects are assigned to treatment groups at random. 47. (A) Game Title, Publisher (B) Percentage of Gaming Audience, 14. False. Randomized experiments are Average Minutes Played per Week generally more reliable than observational (C) Publisher studies. (D) Game Title 15. True 16. True
11. False. Quantitative variables describe how much or how many of something there is. 12. True 13. True 14. True Practicing the Skills 15. Qualitative 16. Quantitative 17. Quantitative 18. Qualitative 19. Quantitative 20. Quantitative 21. Qualitative 22. Qualitative 23. Qualitative 24. Quantitative 25. Ordinal 26. Nominal 27. Ordinal 28. Ordinal 29. Nominal 30. Nominal 31. Nominal 32. Ordinal 33. Continuous 34. Continuous 35. Discrete 36. Discrete 37. Continuous 38. Discrete 39. Discrete 40. Continuous Working with the Concepts 41. Ordinal 42. Discrete 43. Ordinal 44. Quantitative 45. Nominal 46. Ordinal 47. (A) Game Title, Publisher (B) Percentage of Gaming Audience, Average Minutes Played per Week (C) Publisher (D) Game Title 48. (A) Movie Title, Creative Type, MPAA rating (B) Year, Ticket Sales, Tickets Sold (C) Movie Title, Creative Type (D) MPAA Rating Extending the Concepts 49. (A) Ordinal (B) Yes, it a more favorable opinion of the construction of a new shopping mall. (C) No, we cannot say that Jason’s opinion is twice as favorable. (D) Quantitative (E) Yes, Brenda’s answer the ownership of more cars, and the ownership of twice as many cars. (F) Nominal (G) No, Brenda’s answer neither more of something nor twice as much of something. Section 1.3 Exercises 1 – 4 are the Check Your Understanding exercises for this section. Answers to these exercises are on page 26. Understanding the Concepts 5. randomized 6. double-blind 7. observational 8. confounder 9. prospective 10. cohort 11. True 12. False. A confounder makes it harder to draw conclusions from a study. 13. False. In a randomized experiment, subjects are assigned to treatment groups at random. 14. False. Randomized experiments are generally more reliable than observational studies. 15. True 16. True
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