Estimate purchase delay from a small sample
Plan when to review a campaign without overstating certainty.
Measure elapsed time consistently
For each observable order, record time from the chosen acquisition event to purchase. Use a shared clock and exclude records without reliable timestamps. Define whether delays are calendar or business days.
Summarize a range
If 12 of 20 orders arrive within three days and 18 within ten, report both counts. Ten days may be a practical review point, but a small sample does not establish a stable long-term distribution.
Keep late and missing outcomes visible
Recent cohorts are incomplete. Recheck at a fixed age and compare with older observations. Update the planned review window if the product or channel changes materially.
Try a related tool
Find the share of eligible visits that completed a defined action. Count at most one conversion per visit for this calculation.
