I'd like to get some data about the percentage of errors introduced in the software development processes. For example. 50% of all detected errors are introduced in the requirements phase, 30% in the project phase.
Does anyone has a report about it? I've gottten an old one, but I guess things are a bit different today...
Thanks for the answer, but what I really want to get is a kind of research. I heard SEI has published some recent data about it but I couldn't find it in their site.
I have a 1994 researh (Software Development Technologies) which distributes the defects among the several phases in the software development process: