NOTE: Copyright (c) 1999-2001 by SAS Institute Inc., Cary, NC, USA.
NOTE: SAS (r) Proprietary Software Release 8.2 (TS2M0)
      Licensed to GEORGE WASHINGTON UNIVERSITY-CAMPUSWIDE-T/R, Site 0001180006.
NOTE: This session is executing on the WIN_ME  platform.
 
 
 
NOTE: SAS initialization used:
      real time           0.76 seconds
 
1    ****** ST210B rev 2003;
2
3    options formdlim='-';
4
5    filename sb_lst 'c:\sasjobs\stat210\jl2003\sb_lst.pdf';
6    ods printer pdf file=sb_lst;
NOTE: Writing ODS PRINTER output to DISK destination "c:\sasjobs\stat210\jl2003\sb_lst.pdf", printer "PDF".
7
8    TITLE1 'FITNESS DATA EXAMPLE FROM SAS MANUALS';
9
10   DATA FITNESS;
11    INPUT AGE WEIGHT OXY RUNTIME RSTPULSE RUNPULSE MAXPULSE;
12   CARDS;
 
NOTE: The data set WORK.FITNESS has 31 observations and 7 variables.
NOTE: DATA statement used:
      real time           0.11 seconds
 
 
44   ;
45
46   PROC REG DATA=FITNESS;
47     MODEL OXY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE RSTPULSE
48     / SELECTION=BACKWARD SLS=0.05;
49   TITLE2 'BACKWARDS ELIMINATION VARIABLE SELECTION';
50
 
NOTE: 31 observations read.
NOTE: 31 observations used in computations.
NOTE: PROCEDURE REG used:
      real time           0.76 seconds
 
 
51   PROC REG DATA=FITNESS;
52     MODEL OXY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE RSTPULSE
53     / SELECTION=STEPWISE SLE=0.05 SLS=0.05;
54   TITLE2 'STEPWISE VARIABLE SELECTION';
55
 
NOTE: 31 observations read.
NOTE: 31 observations used in computations.
NOTE: PROCEDURE REG used:
      real time           0.17 seconds
 
 
56   PROC REG DATA=FITNESS;
57     MODEL OXY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE RSTPULSE
58     / SELECTION=RSQUARE ADJRSQ CP MSE SSE B;
59   TITLE2 'ALL VARIABLE SUBSETS REGRESSIONS';
60
 
NOTE: 31 observations read.
NOTE: 31 observations used in computations.
NOTE: PROCEDURE REG used:
      real time           0.21 seconds
 
 
61   PROC REG;
62     MODEL OXY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE/scorr2 influence;
63   TITLE2 'REDUCED MODEL EXCLUDING RSTPULSE, ALL OBSERVATIONS';
64
 
NOTE: 31 observations read.
NOTE: 31 observations used in computations.
NOTE: PROCEDURE REG used:
      real time           0.38 seconds
 
 
65   DATA SPLIT; SET FITNESS;
66      U=UNIFORM(44217);
67        BY=.;  AY=.;
68        IF U<=0.5 THEN BY=OXY;
69        IF U> 0.5 THEN AY=OXY;
70
 
NOTE: There were 31 observations read from the data set WORK.FITNESS.
NOTE: The data set WORK.SPLIT has 31 observations and 10 variables.
NOTE: DATA statement used:
      real time           0.05 seconds
 
 
71   PROC PRINT; VAR OXY AY BY RUNTIME AGE;
72   title1 'cross validation data sets';
73
 
NOTE: There were 31 observations read from the data set WORK.SPLIT.
NOTE: PROCEDURE PRINT used:
      real time           0.04 seconds
 
 
74   PROC REG;
75     MODEL AY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE /scorr2;
76      OUTPUT OUT=B PREDICTED=PBY;
77     TITLE2 'REDUCED MODEL, A TO B SPLIT-HALF VALIDATION';
 
NOTE: 31 observations read.
NOTE: 12 observations have missing values.
NOTE: 19 observations used in computations.
NOTE: The data set WORK.B has 31 observations and 11 variables.
NOTE: PROCEDURE REG used:
      real time           0.17 seconds
 
 
78      DATA C; SET B;
79       RBY=BY-PBY;
 
NOTE: Missing values were generated as a result of performing an operation on missing values.
      Each place is given by: (Number of times) at (Line):(Column).
      19 at 79:11
NOTE: There were 31 observations read from the data set WORK.B.
NOTE: The data set WORK.C has 31 observations and 12 variables.
NOTE: DATA statement used:
      real time           0.10 seconds
 
 
80       proc print; var by pby rby;
 
NOTE: There were 31 observations read from the data set WORK.C.
NOTE: PROCEDURE PRINT used:
      real time           0.00 seconds
 
 
81       PROC UNIVARIATE FREQ NORMAL PLOT; VAR BY RBY;
82
 
NOTE: PROCEDURE UNIVARIATE used:
      real time           0.27 seconds
 
 
83   PROC REG;
84     MODEL BY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE /scorr2;
85      OUTPUT OUT=A PREDICTED=PAY;
86     TITLE2 'REDUCED MODEL, B TO A SPLIT-HALF VALIDATION';
 
NOTE: 31 observations read.
NOTE: 19 observations have missing values.
NOTE: 12 observations used in computations.
NOTE: The data set WORK.A has 31 observations and 13 variables.
NOTE: PROCEDURE REG used:
      real time           0.22 seconds
 
 
87      DATA C; SET A;
88       RAY=AY-PAY;
 
NOTE: Missing values were generated as a result of performing an operation on missing values.
      Each place is given by: (Number of times) at (Line):(Column).
      12 at 88:11
NOTE: There were 31 observations read from the data set WORK.A.
NOTE: The data set WORK.C has 31 observations and 14 variables.
NOTE: DATA statement used:
      real time           0.10 seconds
 
 
89       proc print; var ay pay ray;
 
NOTE: There were 31 observations read from the data set WORK.C.
NOTE: PROCEDURE PRINT used:
      real time           0.00 seconds
 
 
90       PROC UNIVARIATE FREQ NORMAL PLOT; VAR AY RAY;
91
 
NOTE: PROCEDURE UNIVARIATE used:
      real time           0.26 seconds
 
 
92   PROC STEPWISE;
93     MODEL AY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE RSTPULSE
94     / BACKWARD SLS=0.10;
95     TITLE2 'STEPWISE WITHIN A-HALF OF OBSERVATIONS';
96
 
NOTE: 31 observations read.
NOTE: 12 observations have missing values.
NOTE: 19 observations used in computations.
NOTE: PROCEDURE STEPWISE used:
      real time           0.22 seconds
 
 
97   PROC STEPWISE;
98     MODEL BY=RUNTIME AGE WEIGHT RUNPULSE MAXPULSE RSTPULSE
99     / BACKWARD SLS=0.10;
100    TITLE2 'STEPWISE WITHIN B-HALF OF OBSERVATIONS';
101
102  RUN;
 
NOTE: 31 observations read.
NOTE: 19 observations have missing values.
NOTE: 12 observations used in computations.
NOTE: PROCEDURE STEPWISE used:
      real time           0.26 seconds
 
 
103
104  ods printer close;
NOTE: ODS PRINTER printed 36 pages to c:\sasjobs\stat210\jl2003\sb_lst.pdf.
105  RUN;