Exam 11: Survey Studies

Random sampling is most important for establishing internal validity, while random assignment is most important for achieving external validity.

The precision with which a sample approximates its population can be estimated using the inverse of the:

Describe the following terms, including how they are similar and different: missing completely at random (MCAR); missing at random (MAR); and not missing at random (NMAR).

The precision of a population estimate would be improved or increased by which of the following?

Explain why we do not necessarily need to conduct a census to have a good estimate of a population's scores. Specifically, based on the formula for calculating the standard error of the mean for a sample, how does sample size influence the precision with which a sample approximates the true population value?

_____(a)_____ is of primary importance in laboratory experiments, _____(b)_____ is of primary importance in survey studies.

Using a phone book to create a list of all fast food restaurants in LA, randomly selecting 20 of these restaurants, then interviewing each employee at each of the selected 20 restaurants is an example of:

June used a multistage sampling to conduct a survey of current political attitudes in a major metropolitan city. First the city was broken into neighborhoods, and then some participants were selected out of each neighborhood to be included in the sample. In this example, when was random sampling employed?

Adria used stratified sampling to collect data on current attitudes toward American car manufacturers, while Benson used cluster sampling to survey people's attitudes. It turns out that the strata/clusters that both Adria and Benson drew their respondents from were quite heterogeneous. In this case, heterogeneous strata _____(a)_____ the precision of Adria's sample, and heterogeneous clusters _____(b)_____ the precision of Benson's sample.

A psychology professor asking her students to complete a survey for a study she is conducting, and asking them to invite their friends and family members to participate, would be an example of:

The population parameter in a study is:

Cyrus does not like conducting interviews in-person, so he wanted to use phone interviews for data collection. What types of questions or issues should Cyrus focus on to maximize the benefits of phone interviews relative to face-to-face interviews? (circle all that apply)