jtfns 1 2 2 4 6 NB. correct 1 1.5 2 5 6 five 1 2 2 4 6 NB. doesn't work if repetitions in data 1 1 2 5 6
On Tue, May 6, 2014 at 2:54 AM, Joe Bogner <[email protected]> wrote: > From http://webdocs.cs.ualberta.ca/~smillie/Jpage/jsp601.ijs > > require 'stats' > Q2=: median > Q1=: [: Q2 ] #~ Q2 > ] > Q3=: [: Q2 ] #~ Q2 < ] > NB. Summaries > > five=: <./,Q1,Q2,Q3,>./ > > five 1 3 4 6 9 > 1 2 4 7.5 9 > On May 6, 2014 12:51 AM, "Kip Murray" <[email protected]> wrote: > > > The list 6 9 3 1 has left and right sublists 6 9 and 3 1, the list 6 9 3 > 1 > > 4 has left and right sublists 6 9 and 1 4 . The middle number, if there > is > > one, is not included in the left and right sublists. > > > > You know the median of 6 9 3 1 is the median of 1 3 6 9 which is 4.5, and > > the median of 6 9 3 1 4 is the median of 1 3 4 6 9 which is 4. > > > > The "fourths" f1 and f4 of a list y are respectively the medians of the > > left sublist and right sublist of /:~ y . > > > > Write a verb to find John Tukey's "five number summary" minimum , f1 , > > median, f3 , maximum of a list y. > > > > --Kip Murray > > > > > > -- > > 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 > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
