Control charts usually present a graphic display of process stability and/or instability with time, from which the you can determine mean and standard deviation.

A control chart plots measured values along with upper and lower quality control limits. Values appearing outside these limits are unacceptable and could indicate a manufacturing problem. Although ...

Traditional statistical process control charts assume that observations are independent and normally distributed about some mean. We investigate the robustness of traditional charts to data ...

Know what your glucose level has been in the past three months and learn to control it better. Better control means a longer, and healthier life.