Sampling Flashcards
Random sampling/probability sampling
each element in the study population has an equal and independent chance of selection in the sample
Chosen by:
The fishbowl draw (a computer program or a table of randomly generated numbers)
Simple random sampling
The most commonly used method of selecting a random sample
Random draw
Stratified random sampling
Study population is classified into sub-groups and then sample is selected from each group
Cluster sampling
Divide a sampling population into groups and then randomly select from each cluster
Saturation point
stage in data collection where you, as a researcher, are discovering no or very little new information from your respondents
Quota sampling
Convenient sample population of people with shared characteristic
Process continues until the required number of respondents (quota) have been contacted
Accidental sampling
Contact anyone (no matter if there’s a shared characteristic) and stop collecting data when you reach the required number of respondents you decided to have in your sample
Convenience sampling
Primarily guided by the convenience to the research in terms of selecting the potential respondents
Judgmental or purposive sampling
Only talking to those who can provide the best information to achieve the objectives of the study
Expert sampling
The selection of people with demonstrated or known expertise in the area of interest to become the basis of data collection
Snowball sampling
Sample people then ask them who else you should talk to and keep going until you reach the saturation point
Systematic sampling
Using intervals to sample
Ex: sample every 5th person