Fig. 3
From: A graphical method of cumulative differences between two subpopulations
In each of these subfigures, the operation indicated by “\(+\)” sums its two inputs and the operations indicated by “−” subtract their inputs, with one of these “−” operations subtracting its rightmost input from its leftmost input, while the other subtracts its leftmost input from its rightmost input. In all cases, the operations indicated by “−” subtract subpopulation 1 from subpopulation 0, in that order. The operation indicated by “\(\div 2\)” divides its input by 2. These subfigures depict visually Formulaes (1) and (2), respectively