The PARETO Procedure

Example 15.9 Creating Alternative Pareto Charts

Note: See Alternative Pareto Charts in the SAS/QC Sample Library.

This example uses the Failure1 data set of integrated circuit fabrication failures from the section Creating a Pareto Chart from Raw Data. The following statements use the CHARTTYPE= option to produce a standard Pareto chart, a cumulative Pareto bar chart, and a Pareto dot plot that includes acceptance intervals for the data:

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

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

Output 15.9.1 shows the standard Pareto chart that the first VBAR statement produces.

Output 15.9.1: Standard Pareto Chart

Standard Pareto Chart


Output 15.9.2 shows the cumulative Pareto bar chart that the second VBAR statement produces.

Output 15.9.2: Cumulative Pareto Bar Chart

Cumulative Pareto Bar Chart


Output 15.9.3 shows the Pareto dot plot and acceptance intervals that the third VBAR statement produces.

Output 15.9.3: Pareto Dot Plot and Acceptance Intervals

Pareto Dot Plot and Acceptance Intervals


Output 15.9.3 shows that the most frequently occurring problem, Contamination, occurs more frequently than the first-ranked cause from a random sample of seven uniformly distributed causes. This result indicates that addressing contamination problems should be given a high priority.