******************************************************************
*  SPSS EXAMPLE 3: 
*  LINEAR REGRESSION AND DIAGNOSTICS
* *****************************************************************.
GET FILE="c:\temp\werner.sav".
COMPUTE bodymass = (weight/2.2026)/(height*.0254)**2 .
EXECUTE .
*--------------------------------------------------------------------------------CORRELATIONS.
CORRELATIONS
  /VARIABLES=chol age acid alb bodymass calcium
  /PRINT=TWOTAIL NOSIG
  /MISSING=PAIRWISE .
CORRELATIONS
  /VARIABLES=chol age acid alb bodymass calcium
  /PRINT=TWOTAIL NOSIG
  /MISSING=LISTWISE .

*-------------------------------------------------------------------------------SCATTER PLOTS.
GRAPH
  /SCATTERPLOT(BIVAR)=age  WITH chol BY pill
  /MISSING=LISTWISE .
GRAPH
  /SCATTERPLOT(BIVAR)=bodymass  WITH chol BY pill
  /MISSING=LISTWISE .
*-------------------------------------------------------------------------REGRESSION.
REGRESSION
  /MISSING LISTWISE
  /STATISTICS COEFF OUTS R ANOVA
  /CRITERIA=PIN(.05) POUT(.10)
  /NOORIGIN
  /DEPENDENT chol
  /METHOD=ENTER age  .
REGRESSION
  /MISSING LISTWISE
  /STATISTICS COEFF OUTS R ANOVA
  /CRITERIA=PIN(.05) POUT(.10)
  /NOORIGIN
  /DEPENDENT chol
  /METHOD=ENTER bodymass .
*-------------------------------------------------------------SEVERAL PREDICTORS.
REGRESSION
  /MISSING LISTWISE
  /STATISTICS COEFF OUTS CI R ANOVA COLLIN TOL
  /CRITERIA=PIN(.05) POUT(.10)
  /NOORIGIN
  /DEPENDENT chol
  /METHOD=ENTER  age acid alb bodymass calcium
  /SAVE PRED ZPRED SEPRED RESID ZRESID.

*--------------------------------------------------------------STEPWISE REGRESSION.
REGRESSION
  /MISSING LISTWISE
  /STATISTICS COEFF OUTS CI R ANOVA 
  /CRITERIA=PIN(.05) POUT(.10)
  /NOORIGIN
  /DEPENDENT chol
  /METHOD=STEPWISE  age acid alb bodymass calcium
  /SCATTERPLOT=(*ZRESID ,*ZPRED )
  /RESIDUALS HIST(ZRESID) NORM(ZRESID) .
*-------------------------------------------------------------ENTER VARIABLES IN BLOCKS.
REGRESSION
   /MISSING LISTWISE
  /STATISTICS COEFF OUTS  ANOVA CHANGE
  /CRITERIA=PIN(.05) POUT(.10) CIN(95)
  /NOORIGIN
  /DEPENDENT chol
  /METHOD=ENTER age   /METHOD=ENTER acid calcium /METHOD=ENTER pill.