HCI.TOP
Q1.15

Sample-size heuristics and misuse

Cards in this group · 4

  1. Q1.15.1The five-user rule belongs to formative usability testing, not surveys or inference
  2. Q1.15.2New problem discovery declines with sample size but does not reach zero
  3. Q1.15.3High-risk decisions require more than minimum-sample qualitative findings
  4. Q1.15.4Card sorting and tree testing need method-specific sample guidance