From sample to population
From sample to population
Inferential tests are used when psychologists want to move from a sample to a judgement about the wider population. Descriptive statistics summarise what happened in the sample, but they cannot tell you whether the pattern is likely to be due to chance.
Step-by-step lessons on AQA A Level Psychology Inferential testing (A-level only). Each one builds up to exam-style questions. Start with the compulsory core topics before tackling the more evaluation-heavy optional and issues-and-debates content.