Which procedure is commonly used for statistical analysis in SAS?

The procedure most commonly used for statistical analysis in SAS is PROC MEANS. This procedure calculates various descriptive statistics for numeric variables, such as mean, standard deviation, minimum, maximum, and the number of observations. PROC MEANS is fundamental in statistical procedures because it allows users to obtain a quick summary of key statistical properties of their data, making it an essential tool for data analysis in SAS.

In contrast, while PROC REPORT is used for creating detailed reports and PROC SORT is utilized to sort data, neither of these is primarily focused on providing statistical summaries. PROC FREQ, on the other hand, is designed for frequency analysis, often applicable to categorical data, but it does not provide the comprehensive range of statistical measures that PROC MEANS offers for numeric data. Thus, among these options, PROC MEANS stands out specifically for its role in statistical analysis.