Variance (σ²)
What Variance (σ²) means in Mathematics A-Level, as defined for AQA, Pearson Edexcel.
Definitions of Variance (σ²)
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Reference: AQA
The square of the standard deviation; it measures spread in the notation N(μ, σ²).
A measure of variation equal to the square of the standard deviation.
Topics that use Variance (σ²)
- N: Statistical distributions (AQA A-Level)
- Statistical distributions (Pearson Edexcel A-Level)
Related terms
- Binomial distribution
- Mean (μ)
- Normal distribution
- Random variable
- standard deviation
- continuity correction
- Cumulative probability
- discrete random variable
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