Moodle PHP Documentation 4.4
Moodle 4.4.9+ (Build: 20250613) (541f1569af4)
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Static Public Member Functions | |
static | population (array $population) |
Population variance Use when all possible observations of the system are present. | |
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static |
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