You probably also noticed this week’s material covers Control
Charts. The math involved in the calculation of Control Limits
isn’t too difficult, once you find the correct formula to use. It
would really be a good idea to know how to do this. Hint,
Hint!!

Here’s a couple of examples to warm-up on.

10 samples of subgroup size 6 (n=6) were collected. Determine the
upper control limit (UCL) for an X-Bar chart if the mean of the
sample Averages is 5 and mean of the sample Ranges is 0.5.

1. Using the table in Appendix B, determine the upper control limit
(UCL) and lower control limit (LCL) for a X-Bar chart.

2. Using the table in Appendix B, determine the upper control limit
(UCL) and lower control limit (LCL) for a R-chart.