| Copyright | (c) 2009 Bryan O'Sullivan |
|---|---|
| License | BSD3 |
| Maintainer | bos@serpentine.com |
| Stability | experimental |
| Portability | portable |
| Safe Haskell | None |
| Language | Haskell98 |
Statistics.Distribution.Normal
Contents
Description
The normal distribution. This is a continuous probability distribution that describes data that cluster around a mean.
Documentation
data NormalDistribution Source
The normal distribution.
Instances
Constructors
Arguments
| :: Double | Mean of distribution |
| -> Double | Standard deviation of distribution |
| -> NormalDistribution |
Create normal distribution from parameters.
IMPORTANT: prior to 0.10 release second parameter was variance not standard deviation.
normalFromSample :: Sample -> NormalDistribution Source
Create distribution using parameters estimated from sample. Variance is estimated using maximum likelihood method (biased estimation).
standard :: NormalDistribution Source
Standard normal distribution with mean equal to 0 and variance equal to 1