PerfCompare: Default statistical method is now Mann-Whitney-U

[Kala Severe]

Hello everyone,

PerfCompare has switched the default statistical method from Student-T to Mann-Whitney-U as part of the PerfCompare Statistic Project to deliver reliable and easily interpretable performance comparisons. You can find more information about the new statistical method in the updated documentation. Student-T is still accessible from the Test Version dropdown on the Results Page.

However, Student-T will be removed from the platform within the coming year. 

If you encounter any issues, have questions, or wish to provide feedback, please report bugs on the Perfcompare Bugzilla component, or reach out to us in the #perfcompare Matrix channel.

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Kala Severe

Senior Software Engineer

Firefox Performance