Regression

Gallery

Source Code

1000 CLS 
1010 PRINT "NUMBER OF OBSERVATIONS=";
1020 INPUT NOB
1030 PRINT NOB
1040 PRINT "NO. INDEP. VARIABLES  =";
1050 INPUT NV
1060 PRINT NV
1070 PRINT 
1080 DIM X(NOB,NV+1)
1085 DIM Y(NOB,1)
1090 FOR I=1 TO NOB
1095 LET X(I,1)=1
1097 CLS 
1100 PRINT ,,"OBSERVATION ",I,,,
1102 PRINT "  DEP. VAR. = ",
1103 INPUT Y(I,1)
1104 PRINT Y(I,1)
1105 FOR J=2 TO NV+1
1110 PRINT "      VAR ";J;" = ",
1120 INPUT X(I,J)
1130 PRINT X(I,J)
1140 NEXT J
1150 PRINT 
1160 PRINT "CORRECT?"
1170 INPUT A$
1180 IF A$(1)<>"Y" THEN GOTO 1097
1190 NEXT I
1200 REM %T%R%A%N%S%O%S%E% %X
1220 LET ROWA=NV+1
1225 LET COLA=NOB
1230 DIM A(ROWA,COLA)
1240 FOR I=1 TO COLA
1250 FOR J=1 TO ROWA
1260 LET A(J,I)=X(I,J)
1280 NEXT J
1290 NEXT I
1300 LET ROWB=NOB
1310 LET COLB=1
1320 DIM B(ROWB,COLB)
1330 FOR I=1 TO ROWB
1340 LET B(I,1)=Y(I,1)
1350 NEXT I
1360 GOSUB 7300
1370 DIM T(NV+1,1)
1380 FOR I=1 TO NV+1
1390 LET T(I,1)=C(I,1)
1400 NEXT I
1410 LET ROWB=NOB
1420 LET COLB=NV+1
1430 DIM B(ROWB,COLB)
1440 FOR I=1 TO ROWB
1450 FOR J=1 TO COLB
1460 LET B(I,J)=X(I,J)
1470 NEXT J
1480 NEXT I
1490 GOSUB 7300
1500 DIM A(NV+1,NV+1)
1510 LET ROWA=NV+1
1520 LET COLA=NV+1
1530 FOR I=1 TO ROWA
1540 FOR J=1 TO COLA
1550 LET A(I,J)=C(I,J)
1560 NEXT J
1570 NEXT I
1580 LET ROWB=NV+1
1590 LET COLB=1
1600 DIM B(ROWB,COLB)
1610 FOR I=1 TO ROWB
1630 LET B(I,1)=T(I,1)
1640 NEXT I
1650 GOSUB 7500
1660 FOR I=1 TO ROWA
1670 FOR J=1 TO COLA
1680 LET A(I,J)=C(I,J)
1690 NEXT J
1700 NEXT I
1710 GOSUB 7300
1800 FOR I=1 TO NV+1
1810 PRINT I,C(I,1)
1820 NEXT I
1830 FOR I=1 TO NOB
1832 LET P=0
1835 FOR J=1 TO NV+1
1840 LET P=P+C(J,1)*X(I,J)
1845 NEXT J
1850 PRINT Y(I,1),INT (P*100+.5)/100
1860 NEXT I
1900 STOP 
7000 REM %T%H%E% %S%U%B%R%O%U%T%I%N%E%S% %I%N% %T%H%E% %7%0%0%0% %B%L%O%C%K% %O%F% %T%H%I%S% %P%R%O%G%R%A%M% %A%R%E% %T%H%E% %M%A%T%R%I%X% %O%P%E%R%A%T%I%O%N%S%.% %7%1%0%0% %=% %S%C%A%L%A%R% %M%U%L%T%I%P%L%I%C%A%T%I%O%N%,% %7%2%0%0% %=% %M%A%T%R%I%X% %A%D%D%I%T%I%O%N% %A%N%D% %S%U%B%T%R%A%C%T%I%O%N%,% %7%3%0%0% %=% %M%A%T%R%I%X% %M%U%L%T%I%P%L%I%C%A%T%I%O%N%,% %7%4%0%0% %=% %M%A%T%R%I%X% %T%R%A%N%S%P%O%S%I%T%I%O%N%,% %7%5%0%0% %=% %M%A%T%R%I%X% %I%N%V%E%R%S%I%O%N%.
7100 REM %S%C%A%L%A%R% %M%U%L%T%I%P%L%I%C%A%T%I%O%N%:%I%N%P%U%T%S%:% %S%C%A%L%A%R%,% %A% %(%M%A%T%R%I%X%)%,% %R%O%W%A%,% %C%O%L%A%.% %O%U%T%P%U%T%:% %C% %(%M%A%T%R%I%X%)% %W%H%E%R%E% %C%=%S%C%A%L%A%R%*%A
7110 DIM C(ROWA,COLA)
7120 FOR I=1 TO ROWA
7130 FOR J=1 TO COLA
7140 LET C(I,J)=SCALAR*A(I,J)
7150 NEXT J
7160 NEXT I
7170 RETURN 
7200 REM %M%A%T%R%I%X% %A%D%D%I%T%I%O%N% %A%N%D% %S%U%B%T%R%A%C%T%I%O%N%.% %I%N%P%U%T%S%:% %A% %(%M%A%T%R%I%X%)%,% %B% %(%M%A%T%R%I%X%)%,% %R%O%W%A%,% %C%O%L%A%,% %S%I%G%N% %(%+%1% %F%O%R% %A%D%D%,% %-%1% %F%O%R% %S%U%B%T%.%)%.% %O%U%T%P%U%T%S%:% %C% %(%M%A%T%R%I%X%)% %W%H%E%R%E% %C%=%A%+% %O%R% %-%B%.
7210 DIM C(ROWA,COLA)
7220 FOR I=1 TO ROWA
7230 FOR J=1 TO COLA
7240 LET C(I,J)=A(I,J)+SIGN*B(I,J)
7250 NEXT J
7260 NEXT I
7270 RETURN 
7300 REM %M%A%T%R%I%X% %M%U%L%T%I%P%L%I%C%A%T%I%O%N%.% %I%N%P%U%T%S% %A% %(%M%A%T%R%I%X%)%,% %B% %(%M%A%T%R%I%X%)%,% %R%O%W%A%,% %C%O%L%A%,% %C%O%L%B%.% %O%U%T%P%U%T%S%:% %C% %(%M%A%T%R%I%X%)% %W%H%E%R%E% %C%=%A%*%B%.
7310 DIM C(ROWA,COLB)
7320 FOR I=1 TO ROWA
7330 FOR J=1 TO COLB
7340 FOR K=1 TO COLA
7350 LET C(I,J)=C(I,J)+A(I,K)*B(K,J)
7360 NEXT K
7370 NEXT J
7380 NEXT I
7390 RETURN 
7400 REM %M%A%T%R%I%X% %T%R%A%N%S%P%O%S%I%T%I%O%N%.% %I%N%P%U%T%S%:% %A% %(%M%A%T%R%I%X%)%,% %R%O%W%A%,% %C%O%L%A%.% %O%U%T%P%U%T%S%:% %C% %(%M%A%T%R%I%X%)% %W%H%E%R%E% %C%=%A%"%.
7410 DIM C(ROWA,COLA)
7420 FOR I=1 TO ROWA
7430 FOR J=1 TO COLA
7440 LET C(I,J)=A(J,I)
7450 NEXT J
7460 NEXT I
7470 RETURN 
7500 REM %M%A%T%R%I%X% %I%N%V%E%R%S%I%O%N%.% %I%N%P%U%T%S%:% %A% %(%M%A%T%R%I%X%)%,% %R%O%W%A%.% %O%U%T%P%U%T%S%:% %C% %(%M%A%T%R%I%X%)% %W%H%E%R%E% %C%=%A%*%*%-%1%.
7502 LET E$=""
7505 DIM C(ROWA,ROWA)
7510 FOR J=1 TO ROWA
7515 LET C(J,J)=1
7520 NEXT J
7525 FOR J=1 TO ROWA
7530 FOR I=J TO ROWA
7535 IF A(I,J)<>0 THEN GOTO 7555
7540 NEXT I
7545 LET E$="SINGULAR MATRIX"
7550 RETURN 
7555 FOR K=1 TO ROWA
7560 LET TEMP=A(J,K)
7565 LET A(J,K)=A(I,K)
7570 LET A(I,K)=TEMP
7575 LET TEMP=C(J,K)
7580 LET C(J,K)=C(I,K)
7585 LET C(I,K)=TEMP
7590 NEXT K
7595 LET TEMP=1/A(J,J)
7600 FOR K=1 TO ROWA
7605 LET A(J,K)=TEMP*A(J,K)
7610 LET C(J,K)=TEMP*C(J,K)
7615 NEXT K
7620 FOR L=1 TO ROWA
7625 IF L=J THEN GOTO 7655
7630 LET TEMP=-A(L,J)
7635 FOR K=1 TO ROWA
7640 LET A(L,K)=A(L,K)+TEMP*A(J,K)
7645 LET C(L,K)=C(L,K)+TEMP*C(J,K)
7650 NEXT K
7655 NEXT L
7660 NEXT J
7665 RETURN 
8000 SAVE "REGRESSIO%N"
8010 STOP 
9000 REM %D%E%L%E%T%E%S% %L%I%N%E%S% %O%F% %P%R%O%G
9005 CLS 
9007 PRINT "FIRST LINE TO BE DELETED=";
9010 INPUT FIRSTLINE
9012 PRINT FIRSTLINE
9015 PRINT "LAST  LINE TO BE DELETED=";
9020 INPUT LASTLINE
9022 PRINT LASTLINE
9030 PRINT 
9032 PRINT "CORRECT?"
9034 INPUT Z$
9036 IF Z$(1)<>"Y" THEN GOTO 9000
9040 LET PROGBYTE=16509
9045 LET DFILE=PEEK 16396+256*PEEK 16397
9050 IF (256*PEEK PROGBYTE+PEEK (PROGBYTE+1))=FIRSTLINE THEN GOTO 9080
9060 LET PROGBYTE=PROGBYTE+4+PEEK (PROGBYTE+2)+256*PEEK (PROGBYTE+3)
9065 IF PROGBYTE>=DFILE THEN GOTO 9200
9070 GOTO 9050
9080 LET FIRSTLINE=PROGBYTE
9090 IF (256*PEEK PROGBYTE+PEEK (PROGBYTE+1))>LASTLINE THEN GOTO 9120
9100 LET PROGBYTE=PROGBYTE+4+PEEK (PROGBYTE+2)+256*PEEK (PROGBYTE+3)
9105 IF PROGBYTE>=DFILE THEN GOTO 9115
9110 GOTO 9090
9115 LET PROGBYTE=DFILE
9120 LET LASTLINE=PROGBYTE
9130 POKE (FIRSTLINE+2),(LASTLINE-FIRSTLINE-4)-256*INT ((LASTLINE-FIRSTLINE-4)/256)
9140 POKE (FIRSTLINE+3),INT ((LASTLINE-FIRSTLINE-4)/256)
9150 STOP 
9200 PRINT "ERROR: FIRST LINE ";FIRSTLINE;" NOT FOUND."
9210 STOP