Please ,help me out to find where this formula has been derived from?
X Number of problem found by Reviewer A
Y Number of problem found by Reviewer B
Z Number of duplicated problem of X and Y
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It sounds like some version of the Lincoln Index?
I first heard of it in the book "How Long Is A Piece Of String?" http://www.sqablogs.com/jstrazzere/1602/...yday+life..html
Joe StrazzereVisit my website: AllThingsQuality.com to learn more about quality, testing, and QA!
Lets try it!
X = 10
Y = 10
Z = 9
20 problems found, 9 are duplicates, so 11 unique issues.
(10+10-9) / (10/9)*10
11 / 1.1111*10
Erm... anyone have any ideas?
please have a look into that pdf and give ur comments on the above said formula for defect ratio improvement.
It seems it comes under the concept Defect Pooling.......