Psychology A-Level
stratified sample
What stratified sample means in Psychology A-Level, as defined for AQA.
Definition of stratified sample
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Reference: AQA
A sample that reflects the exact proportions of relevant subgroups (strata) within the population, obtained by identifying the strata, calculating their relative frequencies and randomly sampling within each stratum.
Topics that use stratified sample
- Handling data (AQA A-Level)
Related terms
- bar chart
- calculating the Sign test
- causation and third variables
- central tendency
- choosing a statistical test
- co-variables
- condition by condition comparison
- Consistency of scores
Using stratified sample in the exam
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