Research Methods- Sampling methods Flashcards
Define ‘hypothesis’.
An informed guess.
Define ‘Operationalism’.
Making your research measurable by breaking things down.
What are the two types of sampling methods?
Random and Non-random.
What are the two types of random sampling?
Systematic and Stratified
What is Systematic Random Sampling?
- Randomly choosing a number between 1-10, then picking out every 10 number from that number and the sampling frame.
- Done until required number is reached.
What is Stratified Random Sampling?
- Dividing research population into different sampling frames, and then using Systematic Random Sampling to select the group that will comprise the research sample.
What is Quota Sampling?
The researcher goes out looking for the right number of people in each category until quota is filled.
What is Purposive Sampling?
- Choosing individuals/cases that fit the nature of the research.
- Occurs when the researcher chooses a particular group/place as its known to be of the type wanted.
What is Opportunity Sampling?
Making the most of situations/opportunities in which the research population is likely to be found.
What is Snowball Sampling?
- Finding/interviewing a person who fits research needs, then asking them to suggest someone else.
- Add people in stages.
What is Volunteer sampling?
- Variation of Snowball Sampling.
- May advertise research volunteers in media or at universities.
What is the most representative sample?
Stratified Random Sampling
What is the least representative sample?
Opportunity Sampling
What are Pilot studies?
- Small-scale rehearsal for the main research.
- An early warning system for problems that have risen out of the operationalisation of the hypothesis.
What can pilot studies detect?
- Whether questions have been clearly understood/interpreted.
- Questions do not upset the participant
- Sampling techniques is successful
- Interview team are well trained
