Exam 5: Selecting Research Participants

A researcher separated the people in a population into three political categories: Democrat, Republican, or Independent. She then selected a random sample from each of these three groups. What kind of sample did she select?

A subset of a population that shares a particular characteristic is called a

When determining the size of a sample, researchers typically

What is sampling error?

Under what set of conditions is the error of estimation lowest?

Explain why systematic sampling is not random.

What is misgeneralization, and why is it a problem?

When researchers use past research findings or their judgment to decide which participants to include in a sample, they are using

The problem that occurs when a researcher generalizes results to a population that differs from the one from which the sample was drawn is called

Explain how you would use a multistage cluster sampling procedure to obtain a sample of children with learning disabilities in your state.

Explain why nonresponse is a problem in survey research.

A sample from which a researcher can draw accurate inferences about the population is a

Why should purposive sampling be avoided in general?

The error of estimation is affected by

What characteristic defines a simple random sample?

Researchers question Kinsey's data regarding sexual behavior because

The Literary Digest election survey of 1936 led to an incorrect prediction because

When researchers want to ensure that a certain kinds of participants in a convenience sample are obtained in particular proportions, they use

Describe power and how it relates to sample size.

What kind of samples do most psychological experiments use?