Funnel by Segment

Funnel by segment means running one funnel definition across several defined user groups and comparing how each group moves through the same steps.

Segments are defined by user properties, by past behavior or by membership of a cohort, and each is evaluated against the same steps and the same conversion window, so only the population changes. That is where it differs from a funnel breakdown: segments are authored by hand, may overlap, and need not cover every user, so their step counts do not sum to the funnel total. The fatal error here is endogenous selection: defining a segment by an action that happens inside the funnel guarantees a higher conversion rate by construction and proves nothing. Very small segments also produce large but unstable gaps that disappear when the range is repeated.