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

@techreport{citeulike:3475913, 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.}, author = {Prechelt, Lutz}, citeulike-article-id = {3475913}, citeulike-linkout-0 = {http://page.mi.fu-berlin.de/prechelt/Biblio/varianceTR.pdf}, comment = {Crunchs data from many experiments to figure out what the actual time-to-complete-one-task histogram is.}, howpublished = {TR 1999-18}, institution = {Universitat Karlsruhe}, keywords = {productivity, programmer}, posted-at = {2008-11-03 17:16:34}, priority = {0}, title = {The 28:1 Grant/Sackman legend is misleading, or: How large is interpersonal variation really?}, url = {http://page.mi.fu-berlin.de/prechelt/Biblio/varianceTR.pdf}, year = {1999} }

TY - RPRT ID - citeulike:3475913 L3 - citeulike-article-id:3475913 N2 - 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. TI - The 28:1 Grant/Sackman legend is misleading, or: How large is interpersonal variation really? KW - productivity KW - programmer N1 - Crunchs data from many experiments to figure out what the actual time-to-complete-one-task histogram is. AU - Prechelt, Lutz PY - 1999/// UR - http://page.mi.fu-berlin.de/prechelt/Biblio/varianceTR.pdf ER -