6 Written Questions

1. Some individuals are favored more than others in observation studies.
2. The designer knows who the control group is and who gets what.
3. Individuals selected based on their availability.
4. The designer doesn't know who has which treatment.
5. A treatment designed to have no effect but to resemble the actual treatment being used.
6. Subjects that are assigned to treatments randomly.

5 Multiple Choice Questions

1. Respondents can decide whether or not to respond.
   1. Voluntary Response
   2. Control Group
   3. Voluntary Response Bias
   4. Population
2. Each individual in the population has an equal and independent chance of being selected.
   1. Simple Random Sample
   2. Randomization
   3. Sample
   4. Convenience Sample
3. Those that feel less strongly on a topic and are not willing to respond.
   1. Convenience Sample
   2. Voluntary Response Bias
   3. Nonresponse Bias
   4. Bias
4. A group of experimental units given no treatment or a default treatment to be compared with the actual treatment groups for observation.
   1. Population
   2. Sample
   3. Survey
   4. Control Group
5. The entire collection of individuals.
   1. Sample
   2. Placebo
   3. Population
   4. Randomization

5 True/False Questions

1. Experiment → A study that imposes a treatment on individuals to compare the responses to different levels of such treatment.

   True        False

2. Sample → A random selection of a representative sample and that collects data.

   True        False

3. Voluntary Response Bias → Those that feel more strongly on a topic and are willing to respond.

   True        False

4. Subjects → A random selection of a representative sample and that collects data.

   True        False

5. Survey → Participants.

   True        False