R Chart

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The R Chart is the graphical chart produced from samples of a flagged parameter on the Spreadsheet Page Tab. The R-Bar is the averages of the range samples.

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If the Sub-Group size on the SPC Page Tab of the Preferences dialog box is set to 1, the R chart becomes a moving range (mR) chart. The moving range is the difference between a specified X value and the one preceding it.

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The calculation numbers vary depending on the data in the Spreadsheet Page Tab. Using the filter function or the hide command allows the user to select the specific data runs to include on the SPC chart.