Saturday, January 23, 2016

usability testing - When does statistical significance matter?


When does the statistical significance of a usability test matter?


I ask because in a recent Boagworld podcast, Steve Krug talks about how he recommends testing with only three users. When asked if that's statistically significant, he says no and goes on to explain that, to paraphrase, it doesn't really matter because some issues will cause everyone to fall at certain steps.




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