                                                                        00000010
        THIS DATA SET IS CALLED STORET.HELP.PERCNTLE                    00000100
                LAST MODIFIED ON JULY 8, 1992                           00000200
                                                                        00000300
    IT EXPLAINS THE METHOD USED BY THE STORET SOFTWARE                  00000400
    TO CALCULATE PERCENTILES.                                           00000500
                                                                        00000800
                                                                        00000810
                                                                        00000820
                                                                        00000830
    NOTE  THE LISTS OF NUMBERS IN THE EXAMPLES BELOW                    00000900
    ARE VERY SHORT FOR EASE OF UNDERSTANDING.  THE RESULANT             00001000
    PERCENTILE SHOULD NOT BE USED IN THE ACTUAL WORLD                   00001100
    FOR 19 OR FEWER VALUES.                                             00001200
                                                                        00001300
                                                                        00001400
                                                                        00001500
     FIRST ORDER ALL THE VALUES BEING CONSIDERED BY VALUE               00001600
     I.E FOR THE VALUES:                                                00001700
       9,8,10,2,3,4                                                     00001800
     THE ORDERED VALUES WILL BE:                                        00001900
       2,3,4,8,9,10 (THE MIN WILL BE 2 AND THE MAX 10)                  00002000
       AND N WILL BE 6.                                                 00002100
                                                                        00002200
     FOR N VALUES THEN THE XTH VALUE IS ASSUMED TO BE THE               00002300
     X/(N+1) TH PERCENTILE                                              00002400
     I.E. FOR VALUES 1,2.                                               00002500
     1 IS ASSUMED TO BE PERCENTILE 33                                   00002600
     2 IS ASSUMED TO BE PERCENTILE 66                                   00002700
                                                                        00002800
     IF PERCENTILE IS LESS THAN MIN THEN THE RESULT WILL BE THE MIN.    00002900
     I.E. THE PERCENTILE 10 FOR (1,2) WILL BE 1.                        00003000
     SIMILIARLY, THE PERCENTILE 90 FOR (1,2) WILL BE 2 OR THE MAX.      00003100
                                                                        00003200
     IF THE PERCENTILE FALLS BETWEEN THE MAX AND MIN THERE ARE TWO WAYS 00003300
     TO CALCULATE THE PERCENTILE.                                       00003400
                                                                        00003500
     IF THE PERCENTILE IS NOT WEIGHTED THEN THE 45                      00003600
     PERCENTILE OF (1,5,6) IS 1 OR THE NEXT LOWER VALUE.                00003700
                                                                        00003800
     IF THE PERCENTILE IS WEIGHTED THE                                  00003900
      45 PERCENTILE OF(1,5,6) WILL BE CALCULATED BY:                    00004000
      WITH 1 AND 5  BEING THE 25 AND 50 PERCENTILE RESPECTIVELY:        00004100
      AND N+1=4.                                                        00004200
                                                                        00004300
     (((.50-.45)*1) + ((.45-.25)*5))*4 OR 4.2.                          00004400
                                                                        00004500
