例20-01计算结果.lst

SAS应用_医学统计学的例题程序及其结果,学习SAS的必备资料.

                                       The SAS System         09:34 Monday, April 1, 2002  85

                                Principal Component Analysis

      20 Observations
       4 Variables


                                      Simple Statistics

                            X1                X2                X3                X4

        Mean       138.0000000       2.325000000       15.00000000       35.50000000
        StD         88.8878655       1.054751155        7.41974606       21.87885304


                                     Correlation Matrix

                                 X1          X2          X3          X4

                     X1      1.0000      0.6950      0.2195      0.0249
                     X2      0.6950      1.0000      -.1480      0.1351
                     X3      0.2195      -.1480      1.0000      0.0713
                     X4      0.0249      0.1351      0.0713      1.0000


                            Eigenvalues of the Correlation Matrix

                       Eigenvalue      Difference      Proportion      Cumulative

            PRIN1         1.71825        0.624716        0.429563         0.42956
            PRIN2         1.09354        0.112189        0.273384         0.70295
            PRIN3         0.98135        0.774481        0.245337         0.94828
            PRIN4         0.20687         .              0.051716         1.00000


                                        Eigenvectors

                            PRIN1         PRIN2         PRIN3         PRIN4

                 X1      0.699964      0.095010      -.240049      -.665883
                 X2      0.689798      -.283647      0.058463      0.663555
                 X3      0.087939      0.904159      -.270314      0.318895
                 X4      0.162777      0.304983      0.930532      -.120830