Guides tagged Sample Size
Every guide filed under Sample Size, newest first.
Product-market fit survey: the 40% test and what to ask next
The Sean Ellis question word for word, the 40% very disappointed heuristic, who to survey, how many answers you need and how to segment the results.
Survey statistical significance: is the difference real?
How to tell a real change from noise: margin of error, a two-proportion z-test with worked numbers, small segments, multiple tests and practical size.
Survey sample size: how many responses you need
The sample size formula with worked arithmetic, a reference table by population and margin of error, and how to turn a target into an invitation count.
Try it on your next survey
Start from a template or a blank survey, send it by email, text or QR code, and read the results in one place.