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8 Cards in this Set
- Front
- Back
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Difference between a population and a sample? |
Population refers to the entire group of research which a sample is drawn whereas a sample is a group of people drawn from the population. |
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What is random sampling? |
sampling procedure that ensures every member of the population has an equal chance of being in the sample |
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What is stratified sampling? |
Involves dividing the population to be sampled into subgroups, then selecting a sample from each subgroup. |
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Experimental designs: |
Matched participants, independent groups design and repeated measures design. |
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Potential EVs are? (5) |
Placebo effect, experimenter effect, non-standardised procedures/methods, order effects, individual participant differences. |
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Different types of statistics? (3) |
Mean, standard deviation, p-value |
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Difference between primary and secondary data: |
Primary data is directly from the experimenter, secondary data is data that has been collected by someone other than the experimenter, usually to test their own hypothesis. |
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Reliability and validity |
validity refers to the extent of which results measure what they're supposed to, whereas reliability refers to the extent of which results are consistent |
