Default Labels

Graphical Enhancements

Default Labels

If a label is not associated with the subgroup-variable, the default horizontal axis label is "Subgroup Index (subgroup-variable)." The default vertical axis label for a primary chart identifies the chart type and the process variable. The default vertical axis label for a secondary chart identifies the chart type only.

For example, the following statements create $\bar{X}$ and s charts with default labels using the data set PARTS given in "Displaying Stratified Process Data" . The resulting charts are displayed in Figure 47.30.

   title 'Control Chart for Diameter';
   proc shewhart history=parts;
      xschart diam*sample / cframe   = vibg
                            cconnect = salmon
                            cinfill  = ywh;
   run;

Figure 47.30: Control Charts with Default Labels

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