measures of dispersion
What measures of dispersion means in Psychology A-Level, as defined for AQA, OCR.
Definitions of measures of dispersion
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Reference: AQA
Reported alongside every average because two conditions can share a mean and still describe completely different sets of participants.
A smaller value means tighter clustering around the mean, while a larger value means greater dispersion.
Statistics that show spread and include the range, variance and standard deviation.
Topics that use measures of dispersion
- Handling data (AQA A-Level)
- Data recording, analysis and presentation (OCR A-Level)
Related terms
- levels of measurement
- measures of central tendency
- significant figures
- type 1 and type 2 errors
- bar chart
- calculating the Sign test
- causation and third variables
- central tendency
Using measures of dispersion in the exam
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