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The 28:1 Grant/Sackman legend is misleading, or: How large is interpersonal variation really?

Prechelt, Lutz

Abstract:
How long do different programmers take to solve the same task?
In 1967, Grant and Sackman published their now famous number of
28:1
interpersonal performance differences, which is both incorrect
and
misleading.
This report presents the analysis of a much larger dataset of
software
engineering work time data with respect to the
same question. It corrects the false 28:1 value, proposes more
appropriate
metrics, presents the results for the larger dataset,
and presents results of several further analyses:
distribution shapes, effect sizes,
and the performance of various significance tests.


Zugehörige Institution(en) am KIT Institut für Programmstrukturen und Datenorganisation (IPD)
Publikationstyp Forschungsbericht
Jahr 1999
Sprache Englisch
Identifikator ISSN: 1432-7864
URN: urn:nbn:de:swb:90-AAA726992
KITopen ID: 72699
Verlag Karlsruhe
Serie Interner Bericht. Fakultät für Informatik, Universität Karlsruhe ; 1999,18
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