sampling Flashcards
1
Q
what is random sampling?
A
no particular system, however aim is still to be representative
2
Q
what is opportunistic sampling?
A
those that are encountered first are chosen
3
Q
what is stratified sampling?
A
population is divided into smaller groups based on a characteristic, then sampled
4
Q
what is systematic sampling?
A
sampling follows a particular pattern, e.g. every 5th candidate in a list
5
Q
why is sampling important?
A
we cannot study the whole population as its impractical; using a representative sample instead allows us to investigate the population easily
