HISTOGRAM Statement: CAPABILITY Procedure
| Overview: HISTOGRAM Statement |
Histograms are typically used in process capability analysis to compare the distribution of measurements from an in-control process with its specification limits. In addition to creating histograms, you can use the HISTOGRAM statement to do the following:
specify the midpoints or endpoints for histogram intervals
display specification limits on histograms
display density curves for fitted theoretical distributions on histograms
request goodness-of-fit tests for fitted distributions
display kernel density estimates on histograms
inset summary statistics and process capability indices on histograms
save histogram intervals and parameters of fitted distributions in output data sets
create hanging histograms
request graphical enhancements
create comparative histograms by using the HISTOGRAM statement together with a CLASS statement
You have three alternatives for producing histograms with the HISTOGRAM statement:
ODS Graphics output is produced if ODS Graphics is enabled, for example by specifying the ODS GRAPHICS ON statement prior to the PROC statement.
Otherwise, traditional graphics are produced by default if SAS/GRAPH® is licensed.
Legacy line printer charts are produced when you specify the LINEPRINTER option in the PROC statement.
See Chapter 3, SAS/QC Graphics, for more information about producing these different kinds of graphs.