Chapter 5 Quiz

When a probability sample is used, the researcher is able to specify the probability that

Any individual in the population will be in the sample

Mis-generalization involves

Generalizing results of a study to a population that differs from the one from which the sample was drawn

Increasing the size of a sample

Increases the power of the study

Why is nonresponse a problem in survey research?

It destroys the advantages of probability sampling

Sampling error

Reflects differences between the sample and the general population

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

Representative sample

An industrial psychologist obtained a list of the 859 employees in a large company. He numbered the employees from 1 to 859, then used a table of random numbers to choose a sample of 100 employees. What kind of sample did he select?

Simple random sample

To ensure that she obtained a sufficiently large number of minority respondents in a study of racial attitudes, Dr. Morgan divided the people in her population into four racial groups. She then drew a random sample from each of these groups. What kind of sample did Dr. Morgan use?

Stratified random sample

Which of the following is usually an advantage of cluster sampling over simple random sampling?

The respondents are often closer together geographically

If a survey researcher reports that her results are accurate within 4 percentage points, 4% is the

Error of estimation

A simple random sample is chosen in such a manner that

Every possible sample of the desired size has an equal chance of being selected

In nonprobability samples, the error of estimation

Cannot be calculated accurately

Which of the following does not affect the error of estimation?

Cluster size

Most experiments in psychology use ________ samples.

Convenience

Why are most behavioral studies underpowered?

Their sample sizes are too small