I think the unit square can be used to visualize this.
https://www.researchgate.net/figure/The-tree-diagram-and-the-unit-square-with-natural-frequencies_fig1_307569151
I think the unit square can be used to visualize this.
https://www.researchgate.net/figure/The-tree-diagram-and-the-unit-square-with-natural-frequencies_fig1_307569151