Explain overlapping channel credit without double counting

Instruction: Reconcile the meeting total, propose a report that can be added correctly, and distinguish attribution from causal impact.

Context:

Ten fictional accounts each produced exactly one accepted meeting in a fixed reporting window. Four had email contact only, two had calls only, and four had both before the meeting. Contacts and meeting IDs are linked correctly.

Marketing reports eight meetings with email contact; the calling team reports six with calls. The manager adds them and reports fourteen meetings. No attribution policy has been chosen.

Explain the error and provide a defensible report. What can these records establish, and what can they not establish?

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The total is ten unique accepted meetings: eight with email plus six with calls, minus the four counted in both. I would reconcile that total against the meeting IDs. For a report we can add, I would show four email-only meetings, two call-only, and four with both...

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