strange QQ-Plot
Hi, i am working on a data set with EDA. That includes QQ-Plots of residuals vs expected normal distribution. What puzzles me is that the range of ordinate and abscissae is so different: while the theoretical quantiles range from [-2, 2] the sample quantiles on the ordinate do extent from [-20, 50]. Quite obviously some kind of transformation is done. Although i intensively RTFM i could not find, what is done here. What exactly characterizes the range of the ordinate in QQ-Plots ? cheers, Fred
Fred Jopp | fjopp at zedat.fu-berlin.de Lab.f. Soil Zoology & Ecology | www.biologie.fu-berlin.de/bodenzoo/ Grunewaldstr. 34 | Tel. +49.30.8385.5946 D-12165 Berlin | FAX +49.30.8385.3886