6. What is a Census? Provide an example of a census. How does it affect the issue of generalizability? Why is it that social scientists do not use them more often?

7. Give a specific example of how a researcher could use convenience sampling to select students to include in the study on smartphone use.

8. Let's say the wireless phone companies were willing to provide a list of all customers who were students at USF who had smartphones. Once in possession of that list of names, what would be the steps to take to select a simple random sample of students to include in the study?

11. Pop culture example time! A large facility produces droids in an assembly line. Leia notices a potential defect that seems to be showing in every other droid. She decides that in the next production run, she'll take a random sample of droids to get a better idea of how many droids might have this defect. Why might Leia choose a simple random sample instead of a systematic random sample?

12. Dr. Smithson is interested in whether students at East High School in Columbus, Ohio, feel safe while they are on their way to and from school, and while at school. He contacts the school and arranges to go to several classrooms to distribute a survey regarding the perception of safety. Why would it not be appropriate to generalize findings to all high schools in Columbus?

13. What two ways does Schofield (2002) suggest for increasing the generalizability of samples in nonprobability sampling methods in qualitative research?

14. What are Units of Analysis? Why are they important? How can errors be made when generalizing from one unit of analysis to another?