Bug 77401 - runner.js for performance test should use Bessel's correction
Summary: runner.js for performance test should use Bessel's correction
Status: RESOLVED DUPLICATE of bug 98115
Alias: None
Product: WebKit
Classification: Unclassified
Component: Tools / Tests (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on: 77074
Blocks: 77037
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Reported: 2012-01-30 20:04 PST by Ryosuke Niwa
Modified: 2012-10-02 00:12 PDT (History)
4 users (show)

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Description Ryosuke Niwa 2012-01-30 20:04:08 PST 
It's kind of bogus to use standard deviation for sample size smaller than 20 (for most tests). We should use some unbiased estimates for standard deviation. As a starter, we can use Bessel's correction.
Comment 1 Hajime Morrita 2012-02-01 17:48:28 PST 
Also, I'd like to see stdev or some distribution metrics in the chart. 
This is another story though.
Comment 2 Ryosuke Niwa 2012-10-02 00:12:08 PDT 

*** This bug has been marked as a duplicate of bug 98115 ***