Variance function
= Variance function
{title2=$V(\mu)$}
The variance function writes an exponential dispersion family's variance as $\operatorname{Var}(Y)=\phi V(\mu)/w$.
= Variance function
{title2=$V(\mu)$}
The variance function writes an exponential dispersion family's variance as $\operatorname{Var}(Y)=\phi V(\mu)/w$.