For example, if your sample size was 7, you would use 0.419, 1.924, and 0.076, respectively, for A2, D4, and D3. Here are the steps for constructing the X-bar/R charts. An important consideration ...

We also cover the equations and constants for the X-bar and R (Range) chart, and work an example of this important control chart. The courses offered in this catalog are a curated collection of ...