Once data has been collected, it can be sorted and processed in different ways depending on the purpose of the survey. Finding an average value – mean, median or mode- is often useful.

You can also read control limits from an input data set; see "Reading Preestablished Control Limits" . For computational details, see "Constructing Median Charts" . For more details on reading raw ...

You can read this data set by specifying it as a HISTORY= data set in the PROC SHEWHART statement, as follows: title 'Median Chart for Weights'; proc shewhart history=detsum lineprinter; mchart weight ...