This site is setup as a tutorial about the Quality Control topic of SPC (Statistical Process Control) charting. Most of the tutorial pages will have one or more live charts you can interact with. Each of the live, interactive, charts runs as a separate Javascript application within the browser. We want it to be a useful tool in the study of SPC charts, for both the undergraduate, graduate, continuing education, and seminar study of Quality Control techniques. We will continue to update and extend the site moving forward and hope that you find it a valuable addition to your Quality Control toolkit. Feel free to post any comments that you might have.
A simple XBar-R chart using data from Table 6-1, in the textbook Introduction to Statistical Quality Control 7th Edition, by Douglas Montgomery. Interact with chart using the scrollbar, and the blue toggle boxes on the left and right hand side of the chart.
