MA 260 MA260 STATISTICAL ANALYSIS I EXAM 1 ANSWERS (2021) - ASHWORTH
Ashworth MA260 Statistical Analysis I Exam 1 Answers (2021)
1. When experimental units are people, they are sometimes called ________________.
2. Which one of the following data are discrete?
3. Determine which of the following describes quantitative data.
4. A radio talk show invites people to call in and state whether or not they think that sexual harassment in the work place is a common problem.
5. Of the televisions offered at an electronics store, 42% cost less than $500.00. Is this an example of statistic or a parameter?
6. Which of the following is the best description of a randomized experiment?
7. An experiment that tends to overestimate or underestimate the true value is said to be ______________.
8. The names of all 137 students in a professor's class are written on identical slips of paper, and the slips are placed into a large glass jar. Then, the professor selects 12 random slips from the jar. Identify the kind of sample that is being used.
9. A middle school student passes out leaflets to the adults at a school function. The leaflets ask the recipient to indicate whether they believe in anthropogenic global warming. The bottom of the leaflet indicates that the completed leaflet should be returned to the student. Identify the kind of sample that is being used.
10. In an experiment, the ______________ is what is measured on each experimental unit.
11. Choose the answer below that best completes the following statement.
12. In a survey of 1000 teenagers, 23% of them said they use tobacco products. Is this an example of statistic or a parameter?
13. Which of the following sample types should you always regard as unreliable?
14. Choose the answer below that best completes the following statement.
15. By visiting homes door-to-door, a municipality surveys all the households in 149 randomly-selected neighborhoods to see how residents feel about a proposed property tax increase. Identify the type of sample that is being used.
16. In an experiment, subjects are put into two categories according to sex, and then each subject is randomly assigned a treatment . This is an example of...
17. You ask your friends who they plan to vote for in the next congressional election. Based on their responses, you conclude that the candidate you favor cannot lose!
18. A small brew pub sent out questionnaires to a simple random sample of 250 customers asking whether they would like the brewery to include an imperial stout in their regular offerings. Of the 250 questionnaires, 12 were returned and 10 of those were in favor of including the stout. Specify the type of bias involved.
19. Which of the following is the best description of a double-blind experiment?
20. Determine which of the following describes ordinal data.
No comments:
Post a Comment