Chapter 7 Flashcards
Which of the following is NOT part of the sampling design process?
Redefining the research question.
The target population can be defined in terms of:
All of the above.
What is a sampling unit?
The basic unit containing the elements of the population to be sampled.
Which of the following is not a qualitative factor that should be considered in determining the sample size?
The precision needed for the results.
Which of the following is not true of probability sampling?
The results will always be more accurate than non-probability sampling.
What is the least expensive and least time-consuming of all sampling techniques?
Convenience sampling.
What are the distinguishing features of simple random sampling?
All of the above.
Which of the following are NOT criteria for the selection of stratification variables in stratified sampling?
Stratifications variables should not be closely related to the characteristic of interest.
Select all of the following statements which you believe to be true. A truly random sample of the general population would be obtained by:
Allocating each individual; a unique number and using a computer to randomly generate numbers of selection.
Below is a list of populations and samples. Select the sample that is most likely to be representative (rather than biased) of the population from which it is drawn.
Population: The general population in an inner London borough. Sample: All patients registered at local GP surgeries in the same area.
Which of the following is NOT a characteristic of quota sampling?
The random selection of units makes it possible to calculate the standard error.
Snowball sampling can help the researcher to:
All of the above.
What effect does increasing the sample size have upon the sampling error?
It reduces the sampling error.
Which of the following is not a type of non-probability sampling?
Cluster sampling.
The standard error is a statistical measure of:
The extent to which a sample mean is likely to differ from the population.
