Everyone started posting their speed test results on Slack and discussing the variance.
As test combinations were randomly selected every two minutes, 24 hours a day, intuition says that their distribution should be even.
The intuition behind this eye roll is that speed test results vary because of environmental conditions, but odd results are much less likely than representative ones.
That also allows defining confidence intervals – a range of values that we hope includes the true speed test value.
As we assume that the speed test results aren’t distributed normally, we apply the Mann–Whitney U test.

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