Caper Jones - Software defect removal efficiency

	B	C	D	E	F	G	H	I	J
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2	Impact of combining code/design reviews
3	Impact of combining code/design reviews
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6		Quality control reviews/methods				Impact
7		Formal design inspection	Formal code inspection	Formal Quality Assurance	Formal testing	% of defects found
8		Formal design inspection	Formal code inspection	Formal Quality Assurance	Formal testing	Worst	Median	Best
9	1	No formal review/method				30%	40%	50%	Bad
10		1 review/method
11	2			y		32%	45%	55%
12	3				y	37%	53%	60%
13	4		y			43%	57%	66%
14	5	y				45%	60%	68%
15		2 reviews/methods
16	6			y	y	50%	65%	75%
17	7		y	y		53%	68%	78%
18	8		y		y	55%	70%	80%
19	9	y		y		60%	75%	85%
20	10	y			y	65%	80%	87%
21	11	y	y			70%	85%	90%
22		3 reviews/methods
23	12		y	y	y	75%	87%	93%
24	13	y		y	y	77%	90%	95%
25	14	y	y	y		83%	95%	97%
26	15	y	y		y	85%	97%	99%
27		4 reviews/methods
28	16	y	y	y	y	95%	99%	99.99%	Good
29	Source: Caper Jones - Software defect removal efficiency
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34	3 Minute Quality Control
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36	1 - What is the bug/defect
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38	2 - What causes the bug/defect
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40	3 - What can be done to prevent the bug/defect
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42	4 - Add the item to a review checklist
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44	- don't spend more than 3 mins - If you can't think of something in 3 mins, it is time to move on.
45	- I did not think 100% prevention was possible - but when I tried it, in most cases, I found prevention worked.
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