Non-random sampling Flashcards
What is quota sampling?
An interviewer/researcher selects a sample that reflects the characteristics of the whole population.
What is opportunity sampling?
Taking a sample from people who are available at the time the study is carried out and who fit the criteria you are looking for.
What are the advantages of quota sampling?
A small sample can still be representative.
No sampling frame.
It is quick, easy and inexpensive
Allows for easy comparison between different groups within a population.
What are the advantages of opportunity sampling?
Easy to carry out.
Inexpensive
What are the disadvantages of opportunity sampling?
Unlikely to provide representative sample.
Highly dependent on individual researcher.
What are the disadvantages of quota sampling?
Introduces bias.
Population must be divided into groups which is costly and can be inaccurate.
Non responses are not recorded
