STANDARD Function

STANDARD (matrix) ;

The STANDARD function is part of the IMLMLIB library. The STANDARD function standardizes each column of an $n \times m$ matrix. Each column of the input matrix is standardized to have a mean of zero and unit standard deviation, as shown in the following example:

use sashelp.class;
read all var _NUM_ into X[colname=varNames];
close sashelp.class;
stdx = standard( x );
print "Standardized Data", stdx[colname=varnames];

Figure 24.391: Standardized Data

Standardized Data

stdx
Age Height Weight
0.4583796 1.2996021 0.5477176
-0.21156 -1.138435 -0.703713
-0.21156 0.5779431 -0.088975
0.4583796 0.0903357 0.1086191
0.4583796 0.2268658 0.1086191
-0.881499 -0.982401 -0.747623
-0.881499 -0.494793 -0.681758
1.1283191 0.0318228 0.5477176
-0.21156 0.0318228 -0.703713
-0.881499 -0.650828 -0.02311
-1.551439 -2.152658 -2.174693
0.4583796 0.3829002 -0.440254
-0.881499 -1.177444 -1.011082
1.1283191 0.8119947 0.5257627
1.7982586 1.884731 2.194337
-0.881499 0.4804216 1.2283203
1.1283191 0.9095162 1.4478695
-1.551439 -0.943392 -0.659803
1.1283191 0.8119947 0.5257627