Let $X \in \mathsf{N}(\mu, \sigma^2)$ be a D210: Gaussian random real number such that
(i) | \begin{equation} \sigma^2 \neq 0 \end{equation} |
Then
\begin{equation}
\frac{X - \mu}{\sigma} \in \mathsf{N}(0, 1)
\end{equation}