Bug 77401

Summary: runner.js for performance test should use Bessel's correction
Product: WebKit Reporter: Ryosuke Niwa <rniwa>
Component: Tools / TestsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: abarth, eric, morrita, zoltan
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 77074    
Bug Blocks: 77037    

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 ***