On Tue, 2011-02-08 at 13:32 -0500, Daniel P. Dougherty wrote: > Under the bins tab on the histogram dialog there is a possible error in the > labels. The issue is how to capture the finite minimum and maximum data > values in a bin?? I think it is more correct that the 8 rules should each be > stated as: > > (-inf,*),[*,*),...,[*,*),[*,+inf) > (-inf,*],(*,*],...,(*,*],(*,+inf) > > [*,*),[*,*),...,[*,*),[*,+inf) > [*,*],(*,*],...,(*,*],(*,+inf] > (-inf,*),[*,*),...,[*,*),[*,*] > (-inf,*],(*,*],...,(*,*],(*,*] > > [*,*),[*,*),...,[*,*),[*,*] > [*,*],(*,*],...,(*,*],(*,*]
Comparing the above with the current git version I see that you are suggesting (with respect to the first interval): [*,*],(*,*],...,(*,*],(*,+inf] [*,*],(*,*],...,(*,*],(*,*] instead of (*,*],(*,*],...,(*,*],(*,+inf) (*,*],(*,*],...,(*,*],(*,*] and (with respect to the last interval): (-inf,*),[*,*),...,[*,*),[*,*] [*,*),[*,*),...,[*,*),[*,*] instead of (-inf,*),[*,*),...,[*,*),[*,*) [*,*),[*,*),...,[*,*),[*,*) Your suggestion would make the first or last interval significantly different from the others. Of course the probability that an observation happens to hit the border is basically 0 (unless you are really having a discrete distribution and should be using frequency tables instead of histograms.) I don't think this maximum/minimum cutoff should really ever be equal to the value of an observation. Andreas _______________________________________________ gnumeric-list mailing list gnumeric-list@gnome.org http://mail.gnome.org/mailman/listinfo/gnumeric-list
