Shape of a traveling wave [Eq. (12)] resulting from Fisher's equation.
(A) at with . The solid vertical line is the mean, and the dotted vertical line is the mode of the pdf. (B) Temporal pattern of adopting an innovation with and . The solid (red) curve shows how the fraction of the population with changes over time, whereas the dotted (green) curve shows the fraction that has adopted as a function of time. The solid vertical line is the mean adoption time , and the dotted vertical lines represent , , and , respectively, to distinguish the five adopter categories.