Details and Examples: PARETO Procedure

This example uses the Failure1 data set of integrated circuit fabrication failures from the section Getting Started: VBAR Statement. The following statements produce a standard Pareto chart, a cumulative Pareto bar chart, and a Pareto dot plot with acceptance intervals of the data: CHARTTYPE= option.

ods graphics on;
proc pareto data=Failure1;
   vbar Cause;
   vbar Cause / charttype=cumulative;
   vbar Cause / charttype=intervals;
run;

Note that ODS Graphics must be enabled for you to use the CHARTTYPE= option.

Output 15.9.1 shows the standard Pareto chart.

Output 15.9.2 shows the cumulative Pareto bar chart.

Output 15.9.3 shows the Pareto dot plot with acceptance intervals.

The chart shows that the most frequently occurring problem, Contamination, does occur more frequently than the first-ranked cause from a random sample of seven uniformly distributed causes. This indicates that addressing contamination problems should be given a high priority.