Ch: 6 Sampling Flashcards Preview

experimental > Ch: 6 Sampling > Flashcards

Flashcards in Ch: 6 Sampling Deck (20)
Loading flashcards...
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

unlike a stratified random sample, this will make use of convenience sampling techniques

quota sample