1. Quantitative design: Ungraded review questions

2. Peter Pan recruited 20 students and then put their names into a container. He closed his eyes and blindly distributed the names into two other containers. He called the set on the right the treatment group and the other one the control group. This is an example of:
Random sampling
Randomization
Experimenter manipulation
Control

3. Jim Jones wanted to make sure that every participant in his study could take the test without interference from variables that might create unfair results. Thus, every one used the same model of computer and took the test under the same lighting condition. This is an example of:
Randomization.
Experimenter manipulation.
Experimenter control
All of the above

4. Dr. Lily Li announced her study in class and offered extra credit to students who participated in the study. This is an example of:
Randomization.
Random sampling.
Convenience sampling
All of the above

5. Peter, Paul, and Mary downloaded the test scores of Program of International Student Assessment (PISA) and compared test performance between the US and the UK students. This is an example of:
Archival research.
Experiment
Survey research
Quasi-experiment

6. In the US some states legalize marijuana and some don’t. Dr
In the US some states legalize marijuana and some don’t. Dr. Rolla Joint conducted a study to investigate whether states legalizing marijuana had a lower crime rate related to drug use. This is an example of:
Experiment
Quasi-experiment
Natural experiment
Case-control study