Psychology A-Level
Sample and population
What Sample and population means in Psychology A-Level, as defined for AQA.
Definition of Sample and population
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Reference: AQA
Descriptive statistics summarise the sample, while inferential statistics use probability to decide what can be claimed about the wider population the sample came from.
Topics that use Sample and population
- Inferential testing (AQA A-Level)
Related terms
- Calculated value versus critical value
- Critical values, N and degrees of freedom
- Experimental design: related and unrelated
- level of measurement
- Level of significance and the 5% convention
- Null hypothesis and alternative hypothesis
- one tailed and two tailed tests
- Parametric assumptions
Using Sample and population in the exam
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