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 dorm, a researcher asks 363 students about their drinking habits.
What type of sampling is used?
A. Convenience sampling is used, because students are chosen due to convenience of location.
B. Stratified sampling is used, because students are divided into groups, and students are chosen at random from these groups.
C. Systematic sampling is used, because students are selected from a list, with a fixed interval between students on the list.
D. 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.
E. Simple random sampling is used, because students are chosen at random.
What potential sources of bias are present, if any? Select all that apply.
A. Because of the personal nature of the question, students may not answer honestly.
B. The sample only consists of members of the population that are easy to get. These members may not be representative of the population.
C. University students may not be representative of all people in their age group.
D. There are no potential sources of bias.
