Let $X \in \text{ChiSquared}(N)$ and $Y \in \text{ChiSquared}(M)$ each be a
D212: Chi-squared random unsigned real number such that
A
D5452: Random unsigned real number $Z \in \text{Random} [0, \infty)$ is a
Fisher random unsigned real number with parameters $N$ and $M$ if and only if
\begin{equation}
Z
\overset{d}{=}
\frac{M}{N} \frac{X}{Y}
\end{equation}