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1' NAME-- FISHER
2'
3' DESCRIPTION -- COMPUTES THE PROBABILITY OF OBTAINING SCORES
4' BY CHANCE USING THE FISHER METHOD OF RANDOMIZATION.
5'
6' SOURCE -- J. D. PERRY, UNIVERSITY OF VERMONT
7'
8' REFERENCE -- BRADLEY, "DISTRIBUTION-FREE STATISTICAL TESTS"
9' 1968, CHAPTER 4
10'
11' INSTRUCTIONS -- INSERT DATA IN LINE 50FF AS FOLLOWS:
12' FIRST, THE TOTAL NUMBER OF SUBJECTS, THEN THE NUMBER
13' OF TREATMENT GROUPS (USUALLY TWO), THEN THE SUBJECTS'
14' SCORES, STARTING WITH THE LOWEST SCORING GROUP FOR THE
15' SAKE OF THE PROGRAM'S EFFICIENCY.
16' NOTE.- THE PROGRAM REQUIRES EQUAL N GROUPS.
17' NOTE.- THE PROGRAM CANNOT HANDLE NEGATIVE SCORES (ADD A
18' CONSTANT TO ALL SCORES TO ELIMINATE THEM),NOR ZEROS (SAME
19' SOLUTION), NOR TIES IN SCORE (FUDGE).
20'
21' * * * MAIN PROGRAM * * *
22'
50 DATA 10,2, 5,4,3,2,6,1,7,8,9,10
100 PRINT "OUR DATA...";
110 DIM S(24)
120 DIM F(100)
130 READ N
140 READ G
150 FOR I = 1 TO N
160 READ S(I)
170 PRINT S(I);
180 NEXT I
190 PRINT
200 LET H = N/G
210 FOR I = 1 TO H
220 LET S6 = S6 + S(I)
230 NEXT I
240 FOR I = 2 TO N
250 ON SGN(S(I)-S(I-1))+2 GO TO 260,360,360
260 LET T2 = S(I)
270 LET I2 = I-1
280 FOR J = 1 TO I2
290 LET L = I - J
300 ON SGN(T2-S(L))+2 GO TO 310,350,350
310 LET S(L+1) = S(L)
320 NEXT J
330 LET S(1) = T2
340 GO TO 360
350 LET S(L+1) = T2
360 NEXT I
370 FOR I = 1 TO N
380 LET R(I) = S(I)
390 NEXT I
440 PRINT "OUR DATA SUMS TO ... ";S6
445 PRINT
450 PRINT "------COMBINATIONS AS EXTREME AS OURS-------------"
460 FOR W = H+1 TO 10
470 LET T(W) = 100 + W
480 NEXT W
600 FOR I = 1 TO (N-H+1)
610 LET T(1) = R(I)
620 IF H > 1 GO TO 650
630 GOSUB 2000
640 GO TO 1950
650 FOR J = 2 TO (N-H+2)
660 LET T(2) = R(J)
670 IF H > 2 GO TO 700
680 GOSUB 2000
690 GO TO 1940
700 FOR K = 3 TO (N-H+3)
710 LET T(3) = R(K)
720 IF H > 3 GO TO 750
730 GOSUB 2000
740 GO TO 1930
750 FOR L = 4 TO (N-H+4)
760 LET T(4) = R(L)
770 IF H > 4 GO TO 800
780 GOSUB 2000
790 GO TO 1920
800 FOR M = 5 TO (N-H+5)
810 LET T(5) = R(M)
820 IF H > 5 GO TO 850
830 GOSUB 2000
840 GO TO 1910
850 FOR P = 6 TO (N-H+6)
860 LET T(6) = R(P)
870 IF H > 6 GO TO 2400
880 GOSUB 2000
890 GO TO 1900
1900 NEXT P
1910 NEXT M
1920 NEXT L
1930 NEXT K
1940 NEXT J
1950 NEXT I
1969 PRINT "---------------------------------------------------"
1970 PRINT "THE TOTAL NUMBER OF COMBINATIONS IS ... ";Y
1971 LET X=Q
1972 PRINT "THE NO. OF COMBINATIONS AS EXTREME AS OURS ..";X
1973 LET P=(X/Y)*100
1974 PRINT "THIS GIVES US A PROBABILITY OF";P;"%"
1975 GO TO 2300
2000 ' THIS SECTION TESTS FOR COMBINATIONS
2001 IF T(1) >= T(2) GO TO 2060
2002 IF T(2) >= T(3) GO TO 2060
2003 IF T(3) >= T(4) GO TO 2060
2004 IF T(4) >= T(5) GO TO 2060
2005 IF T(5) >= T(6) GO TO 2060
2006
2007 LET T2 = 0
2008 LET Y = Y + 1
2010 FOR Z = 1 TO H
2020 LET T2 = T2 + T(Z)
2025
2040 NEXT Z
2043 GOSUB 2200
2044 IF T2 > S6 GO TO 2060
2046 FOR Z = 1 TO H
2047 PRINT T(Z);
2049 NEXT Z
2050 PRINT TAB(18)"SUM =";T2
2055 LET Q=Q+1
2056 PRINT
2060 RETURN
2070 RETURN
2200 LET A = T2
2210 LET V2 = V2 + 1
2220 LET F(A) = F(A) + 1
2230 RETURN
2300 LET B = B + 1
2310 IF F(B) = 0 GO TO 2300
2314 PRINT
2315 PRINT "--------FREQUENCY DISTRIBUTION---------"
2320 FOR C = B TO V2
2325 IF F(C) = 0 GO TO 2350
2330 PRINT "SUM =";C;TAB(10)".";TAB(F(C)*2+10);F(C)
2340 NEXT C
2350 STOP
2400 PRINT "SORRY, I CAN'T HANDLE THIS PROBBLEM"
2410 END
READY
RUN
FISHER 16:27 05-APR-71
OUR DATA... 5 4 3 2 6 1 7 8 9 10
OUR DATA SUMS TO ... 20
------COMBINATIONS AS EXTREME AS OURS-------------
1 2 3 4 5 SUM = 15
1 2 3 4 6 SUM = 16
1 2 3 4 7 SUM = 17
1 2 3 4 8 SUM = 18
1 2 3 4 9 SUM = 19
1 2 3 4 10 SUM = 20
1 2 3 5 6 SUM = 17
1 2 3 5 7 SUM = 18
1 2 3 5 8 SUM = 19
1 2 3 5 9 SUM = 20
1 2 3 6 7 SUM = 19
1 2 3 6 8 SUM = 20
1 2 4 5 6 SUM = 18
1 2 4 5 7 SUM = 19
1 2 4 5 8 SUM = 20
1 2 4 6 7 SUM = 20
1 3 4 5 6 SUM = 19
1 3 4 5 7 SUM = 20
2 3 4 5 6 SUM = 20
---------------------------------------------------
THE TOTAL NUMBER OF COMBINATIONS IS ... 252
THE NO. OF COMBINATIONS AS EXTREME AS OURS .. 19
THIS GIVES US A PROBABILITY OF 7.53968 %
--------FREQUENCY DISTRIBUTION---------
SUM = 15 . 1
SUM = 16 . 1
SUM = 17 . 2
SUM = 18 . 3
SUM = 19 . 5
SUM = 20 . 7
SUM = 21 . 9
SUM = 22 . 11
SUM = 23 . 14
SUM = 24 . 16
SUM = 25 . 18
SUM = 26 . 19
SUM = 27 . 20
SUM = 28 . 20
SUM = 29 . 19
SUM = 30 . 18
SUM = 31 . 16
SUM = 32 . 14
SUM = 33 . 11
SUM = 34 . 9
SUM = 35 . 7
SUM = 36 . 5
SUM = 37 . 3
SUM = 38 . 2
SUM = 39 . 1
SUM = 40 . 1
TIME: 8.00 SECS.
READY