Question 11.
Identify the sampling techniques used and discuss potential sources of bias (if any). Explain. Assume the population of interest is the student body at a university.
Questioning students as they leave a university parking lot, a researcher asks 360 students about their eating habits.
What type of sampling is used?
- Convenience sampling is used, because students are chosen due to convenience of location.
- Cluster sampling is used, because students are divided into groups, groups are chosen at random, and every student in one of those groups is sampled.
- Stratified sampling is used, because students are divided into groups, and students are chosen at random from these groups.
- Systematic sampling is used, because students are selected from a list, with affixed interval between students on the list.
- Simple random sampling is used, because students are chosen at random.
Answer – Option 1. Convenience sampling is used because students are chosen due to convenience of location.