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.
源代码在线查看： 例20-01计算结果.lst
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
