Exam 6: Sampling

A researcher drew a sample by selecting every tenth name in a telephone directory. Which of the following types of sampling did she use?

In cluster random sampling:

Matching -External validity

A research worker plans to evaluate high school students' reactions to a new policy on closed campus stations. He locates himself near the office of the dean, where he interviews every fourth student who visits the dean. He eventually secures data from 100 interviews and publishes his findings as the "Reactions of high school students to a new policy for a closed campus. What may be wrong with this approach?

Which of the following is not true of replication?

The validity of generalizations based on a sample depends on the:

The adequacy of cluster random sampling is most affected by the:

The accessible population in a study is the:

A purposive sample is used when:

Ecological generalizability includes the:

Matching -Purposive sample

The most important feature of a table of random numbers is that:

Generalizing research findings from a sample to the population is most likely to be justifiable when:

The term "external validity includes:

Recommended sample sizes are usually:

Random sampling is least effective when:

Matching -Convenience sample

The first step in selecting a sample should be to:

The best way to obtain a representative sample is to:

In random sampling, it is necessarily true that: