Agenda Sampling probability sampling nonprobability sampling External validity.
Chapter 7: Asking People About Themselves. Surveys [p122] Conducted through the use of a written questionnaire or interview Results are used to describe.
![Chapter 7: Asking People About Themselves. Surveys [p122] Conducted through the use of a written questionnaire or interview Results are used to describe.](https://static.fdocuments.in/doc/330x215/56649d8d5503460f94a74f72/chapter-7-asking-people-about-themselves-surveys-p122-conducted-through.jpg)
