1. Slide 3- 1 Copyright © 2010 Pearson Education, Inc. Active Learning Lecture Slides For use with Classroom Response Systems Business Statistics First Edition by Sharpe, De Veaux, Velleman Chapter 3: Surveys and Sampling

2. Slide 3- 2 Copyright © 2010 Pearson Education, Inc. A sample that consists of the entire population is called a A. Simple sample B. Census C. Parameter D. Survey

3. Slide 3- 3 Copyright © 2010 Pearson Education, Inc. A sample that consists of the entire population is called a A. Simple sample B. Census C. Parameter D. Survey

4. Slide 3- 4 Copyright © 2010 Pearson Education, Inc. The natural tendency of randomly drawn samples to differ one from another is called sampling error. A. True B. False

5. Slide 3- 5 Copyright © 2010 Pearson Education, Inc. The natural tendency of randomly drawn samples to differ one from another is called sampling error. A. True B. False

6. Slide 3- 6 Copyright © 2010 Pearson Education, Inc. A list of individuals from which a sample will be drawn is the A. Stratified List B. Census C. Sampling Frame D. SRS

7. Slide 3- 7 Copyright © 2010 Pearson Education, Inc. A list of individuals from which a sample will be drawn is the A. Stratified List B. Census C. Sampling Frame D. SRS

8. Slide 3- 8 Copyright © 2010 Pearson Education, Inc. Suppose your local school district decides to randomly test high school students for attention deficit disorder (ADD). There are three high schools in the district, each with grades 9-12. The school board pools all of the students together and randomly samples 250 students. What type of sample is this? A. Stratified B. Simple Random C. Convenience D. Cluster

9. Suppose your local school district decides to randomly test high school students for attention deficit disorder (ADD). There are three high schools in the district, each with grades 9-12. The school board pools all of the students together and randomly samples 250 students. What type of sample is this? A. Stratified B. Simple Random C. Convenience D. Cluster Slide 3- 9 Copyright © 2010 Pearson Education, Inc.

10. Slide 3- 10 Copyright © 2010 Pearson Education, Inc. Suppose the state decides to randomly test high school wrestlers for steroid use. There are 16 teams in the league, and each team has 20 wrestlers. State investigators plan to test 32 of these athletes by randomly choosing two wrestlers from each team. What type of sample is this? A. Stratified B. Simple Random C. Convenience D. Cluster

11. Slide 3- 11 Copyright © 2010 Pearson Education, Inc. Suppose the state decides to randomly test high school wrestlers for steroid use. There are 16 teams in the league, and each team has 20 wrestlers. State investigators plan to test 32 of these athletes by randomly choosing two wrestlers from each team. What type of sample is this? A. Stratified B. Simple Random C. Convenience D. Cluster

12. Slide 3- 12 Copyright © 2010 Pearson Education, Inc. The January 2005 Gallup Youth Survey telephoned a random sample of 1,028 U.S. teens aged 13-17 and asked these teens to name their favorite movie from 2004. Napoleon Dynamite had the highest percentage with 8% of teens ranking it as their favorite movie. Which is true? I. The population of interest is U.S. teens aged 13-17. II. 8% is a statistic and not the actual percentage of all U.S. teens who would rank this movie as their favorite. III. This sampling design should provide a reasonably accurate estimate of the actual percentage of all U.S. teens who would rank this movie as their favorite. A. I only B. I and II C. I and III D. I, ll and lII

13. Slide 3- 13 Copyright © 2010 Pearson Education, Inc. The January 2005 Gallup Youth Survey telephoned a random sample of 1,028 U.S. teens aged 13-17 and asked these teens to name their favorite movie from 2004. Napoleon Dynamite had the highest percentage with 8% of teens ranking it as their favorite movie. Which is true? I. The population of interest is U.S. teens aged 13-17. II. 8% is a statistic and not the actual percentage of all U.S. teens who would rank this movie as their favorite. III. This sampling design should provide a reasonably accurate estimate of the actual percentage of all U.S. teens who would rank this movie as their favorite. A. I only B. I and II C. I and III D. I, ll and lII

14. Slide 3- 14 Copyright © 2010 Pearson Education, Inc. A chemistry professor who teaches a large lecture class surveys students who attend his review sessions on how he can make the class more interesting. This survey method suffers from A. voluntary response bias B. nonresponse bias C. response bias D. undercoverage

15. Slide 3- 15 Copyright © 2010 Pearson Education, Inc. A chemistry professor who teaches a large lecture class surveys students who attend his review sessions on how he can make the class more interesting. This survey method suffers from A. voluntary response bias B. nonresponse bias C. response bias D. undercoverage

16. Slide 3- 16 Copyright © 2010 Pearson Education, Inc. A local news program asks viewers to call in and give their opinion on whether or not a nuclear power plant should be built in the region. This survey method suffers from A. voluntary response bias B. nonresponse bias C. response bias D. undercoverage

17. Slide 3- 17 Copyright © 2010 Pearson Education, Inc. A local news program asks viewers to call in and give their opinion on whether or not a nuclear power plant should be built in the region. This survey method suffers from A. voluntary response bias B. nonresponse bias C. response bias D. undercoverage

18. Slide 3- 18 Copyright © 2010 Pearson Education, Inc. The best way to protect a survey from measurement errors is to A. use a simple random sample B. use a representative sample C. conduct a pilot test D. conduct a voluntary response survey

19. Slide 3- 19 Copyright © 2010 Pearson Education, Inc. The best way to protect a survey from measurement errors is to A. use a simple random sample B. use a representative sample C. conduct a pilot test D. conduct a voluntary response survey

20. Slide 3- 20 Copyright © 2010 Pearson Education, Inc. Which statement about bias is true? I. Bias results from random variation and will always be present. II. Bias results from samples that do not represent the population. III. Bias is usually reduced when sample size is larger. A. I only B. II only C. III only D. I, II and III

21. Slide 3- 21 Copyright © 2010 Pearson Education, Inc. Which statement about bias is true? I. Bias results from random variation and will always be present. II. Bias results from samples that do not represent the population. III. Bias is usually reduced when sample size is larger. A. I only B. II only C. III only D. I, II and III