The Sampling Process Flashcards
Random sampling techniques:
SYSTEMATIC RANDOM SAMPLING
You randomly choose a number and pick the nth number.
The larger the sample the more it’s likely to be representative and less likely to be biased.
Random sampling techniques:
STRATIFIED RANDOM SAMPLING
Divides the population into a number of different sampling frames and uses a systematic random sample to select a group.
What is the research/target population?
All the people who could be included in the research.
What is the research population?
The group the sociologists have decided to study and the research is based on a precise definition of this group.
Non-random sampling techniques:
QUOTA SAMPLING
The researcher decides how many in each category the person should be included.
The researcher looks for a number of people until the quota is filled.
Lacks randomness and can be a bias collection made by the researcher.
Non-random sampling techniques:
PURPOSIVE SAMPLING
The researcher chooses individuals that fit the nature of the research.
Non-random sampling techniques:
OPPORTUNITY SAMPLING
Making the most of the situations/opportunities which the research population is likely to be found.
Non-random sampling techniques:
SNOWBALL SAMPLING
Interviewing an individual and being referred to by others willing to be interviewed.
Non-random sampling techniques:
VOLUNTEER SAMPLING
Sociologists advertise the research in magazines allowing participants to volunteer.
Fails to produce a representative sample.