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Developer Documentation
- Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
- Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
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Defines 1 class
Variance:: (1 method):
population()
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean.
Informally, it measures how far a set of (random) numbers are spread out from their average value
https://en.wikipedia.org/wiki/Variance
Informally, it measures how far a set of (random) numbers are spread out from their average value
https://en.wikipedia.org/wiki/Variance
| population(array $population) X-Ref |
| Population variance Use when all possible observations of the system are present. If used with a subset of data (sample variance), it will be a biased variance. ∑⟮xᵢ - μ⟯² σ² = ---------- N |
