Flashcards in Ch: 6 Sampling Deck (20)
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1
A group of individuals a researcher seeks to learn about from a research study
population
2
the group of individuals chosen from the population to represent it in a research study
sample
3
difference in scores from the population to the sample
Sampling error
4
sample chosen such that individuals are chosen w/a specific probability
Probability Sample
5
Individuals are chosen at non-randomly from the population such that available individuals are chosen and the chance of any one individual being selected is not known.
Convenience (Purposive) Sample
6
Sample chosen randomly from the pop. such that each individual has an equal chance of being selected
Simple Random Sample
7
sample chosen randomly from clusters identified in the population
cluster sample
8
Sample chosen from the population such that the proportion of individuals w/a particular characteristic is equivalent in the population and the sample
Stratified Random Sample
9
the degree to which a study provides causal info about behavior
Internal Validity
10
the degree to which the results of a study apply to individuals and realistic behaviors outside the study
External validity
11
sample chosen from the population such that available individuals are chosen
Haphazard/Volunteer Sample
12
Individuals are chosen from the population (non-randomly) such that the proportion of individuals with a particular characteristic is equivalent in the population and the sample.
Quota sample
13
sample chosen fro the population by recruiting on the internet
Internet sample
14
typically a fairly lrg group of individuals ; usually impossible to test
Population
15
the % of ppl out of the total # available who respond to a survey
Response Rate
16
why will we always have a sampling error?
b/c the sample will nvr give the same observations as the entire population would.
17
What are most likely to be representative of the population?
Probability samples
18
obtained more easily than a probability sample
conveience sample
19
Quite common in psychological research
haphazard/volunteer sample
20
