01-06-05-RM: Sampling

Opportunity sampling avoids bias as the researcher has little control over who is selected.

In the context of sampling, when certain groups may be over or under-represented within the sample selected.

A group of people who are the focus of the researcher's interest, from which a smaller sample is drawn.

The extent to which findings and conclusions from a particular investigation can be broadly applied to the population

It is usually possible to include all members of the target population within the sample.

Systematic sampling involves the use of a time frame: a list of potential participants.

Volunteer sampling saves the researcher time and effort as 'they come to him/her'.

Stratified sampling attempts to account for all the different strata in a population.

Which sampling method is most likely to produce a representative sample?

Random sampling might be conducted by using a lottery method or drawing names from a hat.