710 CHAPTER 14 Statistical Process Control Control Charts Access tech supplements, videos, and data sets at www.TriolaStats.com TECH CENTER Statdisk Visit TriolaStats.com for detailed instructions. StatCrunch 1. Click Stat in the top menu. 2. Select Control Charts from the dropdown menu and X-bar, R from the submenu. 3. Select the columns to be used. 4. Click Compute! 5. Click the arrow buttons to switch between the charts and numerical results. Minitab Run Chart 1. Enter all of the sample data in column C1. 2. Click Stat in the top menu. 3. Select Quality Tools from the dropdown menu and select Run Chart from the submenu. 4. In the Single column box enter C1. In Subgroup size enter 1. 5. Click OK. R Chart and x Chart 1. Enter sample values sequentially in column C1 or enter the sample values in columns or rows as in Table 14-1. 2. Click Stat in the top menu. 3. Select Control Charts from the dropdown menu and select Variables Charts for Subgroups 4. Select Xbar-R from the submenu. 5. Select the format of data entered in Step 1 and then select the appropriate columns in the entry box. 6. Enter the subgroup size if all observations are in one column. 7. Click the Xbar-R Options button and then click the Estimate tab and select Rbar. 8. Click OK twice. TI-83, 83 84 Plus Calculator 8 us Ca cu ato Creating Run Charts, R Charts, and Charts using a TI-83>84 Plus calculator is possible but not recommended due to the complex procedures required and limited information displayed. Visit TriolaStats.com for detailed instructions. R R command not available at time of publication. Control charts are available in some R packages. R is rapidly evolving, and an updated list of statistical commands is available at TriolaStats.com. Excel XLSTAT Add-In (not available with all XLSTAT licenses) 1. Click on the XLSTAT tab in the Ribbon and then click SPC. 2. Select Subgroup charts from the dropdown menu. 3. For Chart Family click Subgroup charts and select X-bar–R chart under Chart type. 4. Click the General tab. 5. Under Data format select Column if the data are listed in separate columns or One column if the data are stacked in a single column. 6. If One column is selected, enter the sample size common to all data entries under Common subgroup size. 7. In the Data box enter the cell range of the data. If the data range includes a label, check the Column labels box. 8. Click the Estimation tab and select R bar. 9. Click OK twice.
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