Sampling Techniques Flashcards
What is opportunity sampling?
Researcher uses people who are available at the time.
What are the strengths of opportunity sampling?
‣ Quick to gather.
‣ Easily accessible.
What are the limitations of opportunity sampling?
‣ Unrepresentative.
‣ Open to researcher bias.
What is self-selected sampling?
Researcher uses people who volunteer to take part.
What are the strengths of self-selected sampling?
‣ Reaches many people.
What are the limitations of self-selected sampling?
‣ Open to demand characteristics.
‣ Only people who see advertisement can volenteer.
What is random sampling?
Every member of target population willing to take part and each person have equal chance to be picked.
What are the strengths of random sampling?
‣ Representative.
‣ No researcher bias.
What are the limitations of random sampling?
‣ Time consuming.
What is systematic sampling?
Every nth number on a list names is chosen to take part in research.
What are the strengths of systematic sampling?
‣ Quick to gather.
‣ Easily accessible.
What are the limitations of systematic sampling?
‣ Non representative.
What is stratified sampling?
Researcher chooses participants in proportion to frequency of target population.
What are the strengths of stratified sampling?
‣ Most representative.
What are the limitations of stratified sampling?
- None.
