Population

Write down exactly which people, accounts, or units get counted, and which ones you exclude. Spell out the entry rule, the cutoffs, and who drops out, so two people pulling the number pull the same set.

Write down exactly which people, accounts, or units get counted, and which ones you exclude. Spell out the entry rule, the cutoffs, and who drops out, so two people pulling the number pull the same set.

Example

On the activation card you write: self-serve signups from the United States and Canada who created an account between March 1 and June 30, first-time accounts only. Excluded: internal test accounts, invited teammates, and the 412 users from the reseller bundle.