Sample size: what it means for your landing page
Hookpair team. Updated
The number of visitors or conversions a test needs before its result is reliable enough to act on.

Why it matters after the click
Too small a sample makes random swings look like wins. Bigger expected effects need smaller samples.
Example
- Example
- Planning a test to run until each version has a similar number of visitors from the same ads.
Related terms
Free tool: Ad metrics calculator · CTR, CPC, CPM, conversion rate, cost per purchase and ROAS from the numbers in your ads manager.
Questions
What is sample size?
The number of visitors or conversions a test needs before its result is reliable enough to act on.
Why does sample size matter for landing pages?
Too small a sample makes random swings look like wins. Bigger expected effects need smaller samples.