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measurement
media buying
Check an experiment’s assignment counts before reading its uplift
An experiment can produce an attractive uplift while its assignment counts contradict the intended split. A reproducible illustrative example with editable inputs and explicit limits.
Isaac Turner
2 min read


measurement
media buying
·2 min read
Put a Wilson interval beside a small retention estimate

measurement
media buying
·2 min read
Show how a UTC event crosses a reporting-day boundary

measurement
media buying
·2 min read
Reconcile gross purchases and refunds without moving the cohort

measurement
media buying
·2 min read
Find repeated purchase records before reporting revenue

measurement
media buying
·2 min read
Separate payer concentration from average revenue per payer

measurement
media buying
·2 min read
Hold segment weights fixed when a blended retention rate moves

measurement
media buying
·2 min read
Bound a conversion share when some outcomes are unknown

measurement
media buying
·2 min read
Remove immature installs from a D7 retention denominator

measurement
media buying
·2 min read
Measure how much an event table changed after the first snapshot

measurement
media buying
·2 min read
Spot a repeated revenue total after a one-to-many join

measurement
media buying
·2 min read