Thank you Kip. The 5&simplify function is equally sensitive to all observations while the quartiles are highly sensititive to a few observations.
The 5&simplify function is analytic while the quartiles are not analytic functions. Den 12:19 torsdag den 25. juni 2015 skrev Kip Murray <thekipmur...@gmail.com>: You may want to try Tukey's five number, seven member, etc summaries, appropriate for data from distributions not known to be normal. See https://en.m.wikipedia.org/wiki/Five-number_summary --Kip Murray On Thursday, June 25, 2015, 'Bo Jacoby' via Programming < programm...@jsoftware.com> wrote: > NB. If you have got a bunch of numbers ]n=.?20#10035 32 66 37 94 56 > 44 30 25 70 27 68 49 92 96 79 74 99 72 22NB. and you want to simplify, then > take the mean value > 1 simplify n58.35 > NB. or take the mean value minus (or plus) the standard deviation 3": 2 > simplify n 33 84NB. or take three numbers having the same mean value and > the same standard deviation and the same skewness as the original numbers > 3": 3 simplify n > 28 56 90NB. and so on: > 3": 4 simplify n > 26 46 68 94 3": 5 simplify n 25 37 60 75 96 1 simplify 5 simplify n > 58.35NB. I think this simplify verb is cute and perhaps even useful, so I > am sharing it with you. > simplify=. 4 : 0 > y=.x*}.(%{.)+/y^/i.>:x > x=.1 > for.y do.x=.((-/x*(#x){.y)%#x),x end. > -|.>{:p.x > )NB. If you can simplify the programming, the please let me know. > ThanksBo > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- Sent from Gmail Mobile ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm