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Flashcards in sampling Deck (12):
1

what is the population?

people that the researcher is interested in

2

what is a sample?

smaller group from the population

3

What is generalisation?

sample drawn should be representative of population so generalisations can be made

4

what is bias?

majority sample biased because groups may be over or under represented

5

what is opportunity sample?

- people who are the most available (nearest/easiest)
- ask people nearby

6

evaluation of opportunity sample?

+ simple and quickest
- biased as unrepresentative of the target population

7

what is volunteer sample?

- participants select themselves
- advertisements

8

evaluation of volunteer sample?

+ potentially unbiased as the researcher has no influence (no research bias)
- representation still not guaranteed (no generalize)

9

what is random sample?

- every people has equal chance of being selected
- lottery method out of hat or computer programme

10

evaluation of random sample?

+ unbiased makes it an objective method
- takes time and effort

11

what is stratified sample?

- selected according to frequency of target population
- subgroups/strata identified (like gender) and relative percentages of these groups are reflected

12

evaluation of stratified sample?

+ representative method (generalisability more likely)
- stratification not perfect as it cant reflect all the ways people are different