Year 11 ATAR Psychology Selection of Participants for Research (copy)

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7 Terms

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Population

The entire group of people that is of interest to the researcher.

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Sample

The subsection of the population. The sample should be representative of the population it was taken from.

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Sampling

The process of selecting participants from a population of research interest that will be used in a study.

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Random sampling

Everyone in the population has an equal chance of being selected.

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Stratified sampling

Researcher identifies different demographic groups (strata) within the population and works out the proportions required for each characteristic.

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Convenience sampling

Participants who are easily accessible are selected.

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Snowball sampling

Initial participants are chosen and each participant encourages other people to contact the researcher and join the sample.