There appears to be a discrepancy between the values returned by the prctile
function in statistics-1.0.9 and the prctile function in Octave 3.2.3 base
or Matlab.
Try:
x=[0.99681 0.65388 0.98868 0.89723 0.82408 0.91875 0.65341
0.98494 0.99998 0.98451 0.99612 0.85303 0.98375 0.63034
0.84889 0.76379 0.65696 0.87333 0.63723 0.92791 ...
0.62490 0.96525 0.99875 0.75127 0.97160 0.76852 0.99179
0.59773 0.99411 0.95847 0.99081 0.99006 0.98832 0.99187
0.99858 0.97619 0.99633 0.99648 0.96016 0.78434 ...
0.96164 0.89669 0.93791 0.98041 0.92270 0.99813 0.98505
0.98432 0.97943 0.99998 0.98615 0.99861 0.89135 0.98757
0.94214 0.62010 0.99991 0.94103 0.58801 0.90678 ...
0.94015 0.96830 0.99299 0.51504 0.94118 0.96052 0.82772
0.99975 1.00000 0.83033 0.95529 0.95945 0.97371 0.98821
0.71541 0.84922 0.94112 0.99994 0.97436 0.97788 ...
0.96308 0.63496 0.94937 0.89474 0.95207 0.95914 0.94554
0.96845 0.99151 0.98010 0.71514 0.99893 0.95369 0.71156
0.99970 0.97459 0.50175 0.96379 0.80333 0.85383 ...
0.99709 0.61059 0.86948 0.55384 0.61333 0.59713 0.99951
0.96563 0.93410 0.99838 0.82033 0.99919 0.99679 0.69149
0.99702 0.87239 0.76610 0.73209 0.30426 0.68371 ...
0.97864 0.45112 0.99502 0.90559 0.86818 0.87774 0.99799
0.92109 0.99921 0.99109 0.91209 0.89422 0.93817 0.99990
0.98133 0.94947 0.75422 0.97883 0.99827 0.93700 ...
0.97768 0.93748 0.91913 0.99863 0.99366 0.41248 0.98329
0.99814 0.96972 0.93693 0.93259 0.99857 0.99914 0.98990
0.96173 0.99799 0.93922 0.98139 0.92899 0.93673 ...
0.99925 0.99976 0.93140 0.97401 0.99720 0.99450 0.83717
0.99949 0.98373 0.20870 0.98082 0.92650 0.50653 0.98445
0.87890 0.93368 0.93445 0.93279 0.82957 0.98138 ...
0.99838 0.97931 0.97274 0.74091 0.96389 0.96035 0.99804
0.99577 0.91269 0.98251 0.39771 0.53285 0.86799 0.98827
0.69707 0.96870 0.43429 0.18406 0.99518]';
prctile(x,[2.5 97.5])
Yields:
ans = 0.433199500000000 0.999900500000000 (statistics-1.0.9)
ans = 0.422839750000000 0.999905250000000 (Octave 3.2.3 and Matlab)
:) Michael
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