The STANDARD Procedure

Overview

The STANDARD procedure standardizes variables in a SAS data set to a given mean and standard deviation, and it creates a new SAS data set containing the standardized values.

Standardized Test Scores Using PROC STANDARD shows a simple standardization where the output data set contains standardized student exam scores. The statements that produce the output follow:

proc standard data=score mean=75 std=5
              out=stndtest;
run;

proc print data=stndtest;
run;

Standardized Test Scores Using PROC STANDARD

Z Scores for Each BY Group Using PROC STANDARD shows a more complex example that uses BY-group processing. PROC STANDARD computes Z scores separately for two BY groups by standardizing life-expectancy data to a mean of 0 and a standard deviation of 1. The data are 1950 and 1993 life expectancies at birth for 16 countries. The birth rates for each country, classified as stable or rapid, form the two BY groups. The statements that produce the analysis also

print statistics for each variable to standardize
replace missing values with the given mean
calculate standardized values using a given mean and standard deviation
print the data set with the standardized values.

For an explanation of the program that produces this output, see Standardizing BY Groups and Replacing Missing Values .

Z Scores for Each BY Group Using PROC STANDARD

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