title 'dummy coding dataset'. data list records=1 /1 group 1 y 3-4. begin data. 1 4 1 5 1 6 1 7 1 8 2 7 2 8 2 9 2 10 2 11 3 1 3 2 3 3 3 4 3 5 end data. if (group=1) x1=1. if (group ne 1) x1=0. if (group=2) x2=1. if (group ne 2) x2=0. regression var=y,x1,x2/dependent=y/enter x1 x2. 10 Dec 97 SPSS for Unix, Release 5.0 (IBM RS/6000) Page 1 12:37:44 sigma.oac.ucla.edu IBM RS/6000 IBM AIX 3.2. For IBM AIX 3.2. sigma.oac.ucla.edu SPSS ID 265665 -> title 'dummy coding dataset'. -> data list records=1 -> /1 group 1 y 3-4. This command will read 1 records from the command file Variable Rec Start End Format GROUP 1 1 1 F1.0 Y 1 3 4 F2.0 -> begin data. -> 1 4 -> 1 5 -> 1 6 -> 1 7 -> 1 8 -> 2 7 -> 2 8 -> 2 9 -> 2 10 -> 2 11 -> 3 1 -> 3 2 -> 3 3 -> 3 4 -> 3 5 -> end data. Preceding task required .00 seconds CPU time; .06 seconds elapsed. -> if (group=1) x1=1. -> if (group ne 1) x1=0. -> if (group=2) x2=1. -> if (group ne 2) x2=0. -> regression var=y,x1,x2/dependent=y/enter x1 x2. There are 522,960 bytes of memory available. The largest contiguous area has 522,608 bytes. 1364 bytes of memory required for REGRESSION procedure. 0 more bytes may be needed for Residuals plots. 10 Dec 97 dummy coding dataset Page 2 12:37:52 sigma.oac.ucla.edu IBM RS/6000 IBM AIX 3.2. * * * * M U L T I P L E R E G R E S S I O N * * * * Listwise Deletion of Missing Data Equation Number 1 Dependent Variable.. Y Block Number 1. Method: Enter X1 X2 Variable(s) Entered on Step Number 1.. X2 2.. X1 Multiple R .86603 R Square .75000 Adjusted R Square .70833 Standard Error 1.58114 Analysis of Variance DF Sum of Squares Mean Square Regression 2 90.00000 45.00000 Residual 12 30.00000 2.50000 F = 18.00000 Signif F = .0002 ------------------ Variables in the Equation ------------------ Variable B SE B Beta T Sig T X2 6.000000 1.000000 1.000000 6.000 .0001 X1 3.000000 1.000000 .500000 3.000 .0111 (Constant) 3.000000 .707107 4.243 .0011 End Block Number 1 All requested variables entered. 10 Dec 97 dummy coding dataset Page 3 12:37:52 sigma.oac.ucla.edu IBM RS/6000 IBM AIX 3.2. Preceding task required .03 seconds CPU time; .07 seconds elapsed.