Lina's Channel ROMI — Chapter 3 Worked Example

Dataset documentation and downloads

The five-channel marketing-attribution dataset behind Lina's clustered-column failure vs the single-encoding Big Idea rebuild in Chapter 3 of The Defensible Decision. Five channels, four metrics each, one audience question — and one chart shape that answers it in three seconds.

Files

Markdown files open in the browser. Data files download directly.

Start with README.md for purpose and limitations, then use SCHEMA.md for field definitions.