Sampling

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  • Created by: FlimJim
  • Created on: 12-05-14 14:57
Sampling
ONLY KEY CONCEPT: representativeness. The sample is drawn from the population.
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Opportunity Sample
Taking people who are availiable at the time and fit the criteria. Easy in terms of money and time.Often produces a biased sample as it is easy for the researcher to choose from own social/cultural group. Researcher may choose a certain 'type'.
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Self-selected Sample
Participants volunteer or respond to an advert. Quick and reaches a wide variety. May not be representative due to a certain 'type' choosing to help.
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Random Sampling
Every member of the population has an equal chance of being chosen. Produces an unbiased representative sample. Can be time consuming, difficult to obtain all names etc.
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Stratified Sampling
Classifying the population into catagories then choosing participants from each catagories in the same proportions they occur in the population
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Snowball Sampling
Can be used if population is difficult to contact. One who fits the criteria of the sample contacts others they know who also fit the same criteria. May be biased and of a certain 'type'
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Other cards in this set

Card 2

Front

Taking people who are availiable at the time and fit the criteria. Easy in terms of money and time.Often produces a biased sample as it is easy for the researcher to choose from own social/cultural group. Researcher may choose a certain 'type'.

Back

Opportunity Sample

Card 3

Front

Participants volunteer or respond to an advert. Quick and reaches a wide variety. May not be representative due to a certain 'type' choosing to help.

Back

Preview of the back of card 3

Card 4

Front

Every member of the population has an equal chance of being chosen. Produces an unbiased representative sample. Can be time consuming, difficult to obtain all names etc.

Back

Preview of the back of card 4

Card 5

Front

Classifying the population into catagories then choosing participants from each catagories in the same proportions they occur in the population

Back

Preview of the back of card 5
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