What is quota sampling ?
a sample selected to represent the characteristics of a population
What are the advantages of quota sampling ?
representative
no sampling frame
quick
easy
inexpensive
easy comparison
What are the disadvantages of quota sampling ?
bias
costly
inaccurate
more groups make it more expensive
non-responses are not recorded
What is opportunity/convenience sampling ?
taken from people available at the time and meet the criteria
What are the advantages of opportunity sampling ?
easy
inexpensive
What are the disadvantages of opportunity sampling ?
not representative
dependent on the researcher