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17.2.5 Creating Pareto Charts

Pareto Chart.png

The pareto chart is a special type of bar chart accompanied with a line graph. Typically, the vertical bars, whose heights reflect the frequency or impact of problems, are in descending order of significance and the line graph is ascending monotonously.

Pareto charts can be used to identify factors that have the greatest cumulative effect on the system. Thus, it is helpful in screening out the less significant factors in an analysis.

Creating Pareto Chart from the Binned Data

If you have already had binned data, you can create a pareto chart from it by using the Plot: 2D: Pareto Chart - Binned Data menu command, or click the Pareto Chart - Binned Data button Button Pareto Chart-Binned Data.png on the 2D Graphs toolbar. This will bring up the plot_paratobin dialog.

The following example shows you this way of creating pareto chart.

  1. Activate the worksheet that has the binned data.
    Pareto charts 1a.png
  2. Select Plot: Statistics: Pareto Chart - Binned Data from the menu or click the Pareto Chart - Binned Data button on the 2D Graphs toolbar to open the Plot_paretobin dialog.
  3. Select the first column for the Data Input Range item and the second for the Count Input Range item.
    Plot paretobin dialog.png
  4. Click the OK button to plot the pareto graph. During the plotting of the pareto graph, a result sheet ParetoBin1 containing the statistic results will be created automatically.

Creating Pareto Chart from the Raw Data

If you have raw data, you can create a pareto chart from it by using the Plot: 2D: Pareto Chart - Raw Data menu command, or click the Pareto Chart - Raw Data button Button Pareto Chart-Raw Data.png on the 2D Graphs toolbar. This will bring up the plot_paratoraw dialog.

 

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