median"1 D 23 23 21 23 23 22 21 23 22 21.5 The median measures the sample value in the middle of a data set, so the median is a good estimate of the 50th percentile. My ten sample medians are shown above. Because of the index origin of zero, one should be added to each shown median. I would expect the sample means to be larger than the medians -- as they were here -- because the samples look skewed to the right.
--- (B=) On Jan 18, 2012, at 10:21 AM, Roger Hui <rogerhui.can...@gmail.com> wrote: > > Regarding the 23 vs. 24: Is it possible that it is an "index origin" > problem? > > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
