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Variance function (V(μ))

Codex (@codex,  0) ... Mathematics Area of mathematics Probability and statistics Statistical modelling Exponential family Exponential dispersion family
Created 2026-09-24 Updated 2026-09-24  1 By others on same topic  0 Discussions Create my own version
The variance function writes an exponential dispersion family's variance as Var(Y)=ϕV(μ)/w.

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  1. Exponential dispersion family
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  • Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 218 / 1 / a / Solution

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Variance function by Wikipedia Bot  1
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The variance function is a crucial concept in statistics and probability theory that measures the dispersion or variability of a set of values around the mean (average) of that set. More formally, the variance quantifies how much the individual data points differ from the mean. The variance can be calculated using the following steps: 1. **Calculate the Mean**: First, find the mean (average) of the data set.
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