Sampling Flashcards
Define sample
A group selected from a larger population. This should be representative of the target population — you can generalize
Define population
Everybody in the WORLDDD
Define target population
The entire set of people that psychologists want to research with a particular characteristic
Define representative
An accurate reflection of a larger group of people
Define Generalisability
The ability to draw conclusions that apply to a larger group outside of research
What are the 5 sampling techniques
Random
Opportunity
Volunteer
Systematic
Stratified
Define random sampling
Each member of the target population has an equal chance of being selected
Explain the random sampling method
Random sampling technique is used to select each individual e.g out of a hat
Strengths of random sampling
-representative sample most of the time and high population validity
Weakness of random sampling
-you may get people if the same demographic by accident meaning a non-representative sample
Define opportunity sample
Participants are presently available to the researcher are used
Explain the method of the opportunity sample
Researcher approaches individuals and asks them to participate
Strengths of opportunity sample
-easiest p.t collection method which is quick and convenient
Weakness of opportunity sampling
-sample may be biased if all the p.t were from the same area therefore low population validity
Define volunteer sampling
p.t self select to take part in
