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<div class="moz-cite-prefix">On 09/06/2021 10:05, Martyn Thomas
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:f9d8f703-b1be-81bc-468d-206235e79a5e@72f.org">The SEI
data I referred to was from a study carried out by Watts Humphrey,
of the Software Engineering Institute at Carnegie-Mellon
University, analysed the fault density of more than 8000 programs
written by 810 industrial software developers.
resources.sei.cmu.edu/asset_files/SpecialReport/2009_003_001_15035.pdf
p132</blockquote>
<p><font size="+1">That's the data from the original version of the
PSP training course. The course involves writing 10 small-ish
programs, hence "over 8000" programs for 810 developers.</font></p>
<p><font size="+1">I took the later version of the course (only 8
programs, so people could go home early on the Fridays...) in
2004.</font></p>
<p><font size="+1">SEI has all the data for those people, but I'm
not sure if it's significant, since it's just for individual
people writing relatively small programs, so no scale or team
effects.</font></p>
<p><font size="+1">I asked Watts if they'd mine and publish the
data-set, but SEI were never inclined to do so... one of the
things about PSP is that individuals' personal data stays that
way. I have data for about 12 people (I was the Instructor after
all) taking the course at Altran UK in about 2010/11.<br>
</font></p>
<p><font size="+1">One good piece of news: the PSP training material
is now freely available, so you can try it all yourself if you
feel inclined.</font></p>
<p><font size="+1">All the best,</font></p>
<p><font size="+1"> Rod</font></p>
<p><font size="+1"></font><br>
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