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    Psychology GCSE

    Proportions within standard deviations

    What Proportions within standard deviations means in Psychology GCSE, as defined for AQA.

    Definition of Proportions within standard deviations

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    Reference: AQA

    A known proportion of scores lies within given standard deviations of the mean, approximately 68% within one and about 95% within two.
    AQA · Data handling

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