What option helps specify the output of statistical metrics in PROC MEANS?

The option that helps specify the output of statistical metrics in PROC MEANS is OUTPUT. This option allows you to create a new dataset containing the statistics computed by PROC MEANS, such as means, medians, standard deviations, and other measures. By using the OUTPUT statement, you can direct these statistics to a new dataset and customize the variables and their names.

While the VAR statement specifies which variables are analyzed to produce the statistics, it does not control how those statistics are outputted. Similarly, the CLASS statement is used to categorize the data into groups for analysis but does not impact the generation of the output dataset itself. The DATA option simply indicates the input dataset to be used for the PROC MEANS procedure and does not dictate the output of statistical metrics.