Quantitative Analysis for Management, 13/e

Appendix 15.1: Using QM for Windows for SPC

The QM for Windows Quality Control module can compute most of the SPC control charts and limits introduced in this chapter. Once the module is selected, we select New and indicate which type of chart (p-chart, x-bar chart, or c-chart). Program 15.5A displays the different possible choices in QM for Windows. When the p-chart is selected for the ARCO example, the initialization window opens, as displayed in Program 15.5B. We enter a title and the number of samples (20 in this example) and then click OK. An input window opens, and we enter the 20 sample values (number of errors or defects in the sample) and specify the sample size (100). We click Solve, and the output window opens, as illustrated in ...