normal distribution
What normal distribution means in Psychology A-Level, as defined for AQA, OCR.
Definitions of normal distribution
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Reference: AQA
A symmetrical bell shaped curve in which the mean, the median and the mode all sit together under the peak and the tails approach but never meet the horizontal axis.
A symmetrical, bell-shaped curve where most scores cluster near the centre and the tails fall away evenly, so the mean, median and mode all sit together at the peak.
The symmetrical bell curve occurring when most people score near the middle and fewer score towards either extreme.
Topics that use normal distribution
- Data handling and analysis (AQA A-Level)
- Handling data (AQA A-Level)
- D.1 – handling data (OCR A-Level)
Related terms
- co-variables
- levels of measurement
- Meta-analysis
- primary data
- qualitative data
- quantitative data
- secondary data
- central tendency
Using normal distribution in the exam
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