The Pickles.jmp data in the Quality Control sample data folder contains the acid content for vats of pickles. Because the pickles are sensitive to acidity and produced in large vats, high acidity ruins an entire pickle vat. The acidity in four vats is measured each day at 1, 2, and 3 PM. The data table records day, time, and acidity measurements. You can create Individual Measurement and Moving Range charts with date labels on the horizontal axis.
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Select Analyze > Quality and Process > Control Chart > IR.
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Click OK.
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The individual measurement and moving range charts shown in Figure 3.20 monitor the acidity in each vat produced.