Funnel in 20: History

In reports, ads and assignments it fits ordered drop-off: leads, checkouts, applications. Skip it when stages are not nested subsets of the same population. This page gathers anatomy, fit, craft, failure modes and work / ads / school recipes for Funnel. When the story is: ordered drop-off: leads, checkouts, applications.

Skip it in cases like: stages are not nested subsets of the same population. Sales-management language of the mid-20th century; later CRM dashboards Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure. Yes for lab reports and poster boards if axes, units and a source line are present.

Excel or Google Sheets or PowerPoint; export SVG/PDF. Do not rely on hue alone. Label directly and check greyscale. Funnel: honour width (or area) of successive stages, and switch when stages are not nested subsets of the same population. The core mark of Funnel is width (or area) of successive stages.