Incorrect number or percent of observations trimmed in PROC CAPABILITY prior to SAS® 9.1


When the TRIMMED=value(s) option is specified in the PROC CAPABILITY statement, a different value than the one specified might be used to compute the trimmed means. For example, if you request a 10% trimmed mean with TRIMMED=0.10, a 12.5% trimmed mean is computed instead. The output indicates the value that is used.

There is no circumvention for this problem.