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D 300 13 92
E 200 8 100
FIGURE 10.3 Pareto chart
The problems are rank-ordered according to their frequency and percentage of defects.
The defect frequencies in this figure appear as black bars, and the cumulative
percentages of defects are plotted as circles. The rank-ordering of these problems
shows you where corrective action should be taken first. You can see in Figure 10.3 that
problem A should receive priority attention because the most benefit will come from
fixing this problem.
Run Chart
A run chart displays data observed or collected over time as plots on a line. Over time,
you will observe patterns and trends such as improvements (or the lack thereof). You
can observe positive (or negative) change with a run chart as well. For example, let’s
say your organization is releasing a new product. They might plot the dollar amount of
sales of the new product over a time period. Figure 10.4 shows a sample of this data.
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