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