The purpose of sampling is to select a set of elements from a population in such a way that the descriptions of the sample statistics accurately portray the parameters of the population. This is best achieved through use of:
a. a convenience sample
b. random selection
c. the sampling element
d. stratified sampling
Question 2
A basic principle of probability sampling is that a sample will be representative of the population from which it is drawn if:
a. all members of the population have an equal chance of being selected for the sample
b. the researcher uses a method of selection based upon convenience
c. every nth person is selected for the sample
d. all are principles of probability sampling