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Why is WEVO Pro's N 120?

A higher sample size (120N and above) is recommended for statistically significant scoring, benchmarking and comparisons

This allows WEVO to reliably score and benchmark experiences (or stimuli) within a reasonable price and time. On average, 120-participant WEVO Pro results have a statistical significance level of 95 percent, with a standard deviation of 2. 

This sample size yields illustrative, rich qualitative and visual data to uncover the real reasons why an experience is effective – giving our customers more confidence in making decisions.

However, WEVO Pro does support studies with smaller samples:

  • 50 respondents: Directional insights; includes up to 10 custom questions
  • 10 respondents: Highly directional insights; includes up to 15 custom questions

Although they’re still very useful for understanding patterns, strengths, and potential issues, they shouldn’t be interpreted with the same level of confidence as a higher N study. That’s why we recommend using lower N results primarily for exploratory insights and qualitative learning, rather than as a definitive benchmark comparison.