Handling Insignificance in UX Data

Summary: After collecting KPI numbers for two versions of a design, the difference between the two metrics is not statistically significant. Now which version should you launch?

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Understanding Statistical Significance

Explains how the concept of statistical significance relates to the proportion of true and false results that are published in the research literature.

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Jakob Nielsen, Ph.D., is a retired principal and co-founder (with Dr. Donald A. Norman) of the Nielsen Norman Group. Jakob established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and invented the heuristic evaluation method.

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