ROI on Improvement

Project Results by SEI Level

SEI Level	Calendar Time (Months)	Effort (Person Months)	Total Cost ($000)
			(Median)	(Lowest)	(Highest)
I	29.8	593.5	5,440	1,786	101,721
II	18.5	143.0	1,311	962	1,732
III	15.2	79.5	728	518	933
IV	12.5	42.8	392	279	502

For the code and test phases only
of a typical 200,000-line business application.

Project Results by SEI Level

(cont.)

SEI Level	Calendar Time (Months)	Effort (Person Months)	Defects		Total Cost US $000 (Median)
			Discovered	Shipped
I	29.8	593.5	1,348	61	5,440
II	18.5	143.0	328	12	1,311
III	15.2	79.5	182	7	728
IV	12.5	42.8	97	5	392

Defect counts include all phases up to final customer shipment.

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