Psychology A-Level
Null hypothesis and alternative hypothesis
What Null hypothesis and alternative hypothesis means in Psychology A-Level, as defined for AQA.
Definition of Null hypothesis and alternative hypothesis
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Reference: AQA
The null hypothesis states there is no difference or no correlation and any pattern is due to chance; if the result reaches significance it is rejected and the alternative hypothesis retained.
Topics that use Null hypothesis and alternative hypothesis
- 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
- one tailed and two tailed tests
- Parametric assumptions
- Probability and chance
Using Null hypothesis and alternative hypothesis in the exam
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