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proc means and proc summary

• proc means and proc summary compute these statistics for continuous variables:
  

  clm css cv kurtosis lclm max mean 
  
  min mode n nmiss p1 p5 p10 p25 p50 p75
  
  p90 p95 p99 qrange range skewness
   
  std stderr sum sumwgt uclm ussvar  
  

• Use a by clause to compute statistics for grouped data:
  

  proc means data=drugstore;
     by chain product;
  

  The data must be sorted to use a by clause.
   
• An alternative for computing statistics for grouped variables is to use a class clause:
  

  proc means data=drugstore n mean std;
     class chain product;
     var price;
  

• proc summary provides output similar to proc means when the class statement is used.
   
• proc summary is designed for output to a dataset. Printed output must be specifically requested.
   
• See the ProcMeansSummary Example.
   
• Reference:
   
  
  proc summary
  New Ways and Means to Summarize Files
  www2.sas.com/proceedings/sugi28/165-28.pdf