Statistics.Distribution.Normal

data NormalDistribution

The normal distribution.

Instances

• Show NormalDistribution
• Eq NormalDistribution
• Distribution NormalDistribution
• ContDistr NormalDistribution

normalDistr :: Number -> Number -> NormalDistribution

Create normal distribution from mean and standard deviation Use this function only when you are sure that sd > 0. Otherwise use safe normalDistrE

normalDistrE :: Number -> Number -> Maybe NormalDistribution

Create normal distribution in a safe way

standard :: NormalDistribution

Standard normal distribution with mean equal to 0 and variance equal to 1

fromSample :: Sample Number -> Maybe NormalDistribution

Create distribution using parameters estimated from sample. Variance is estimated using maximum likelihood method (biased estimation).