Understanding Statistical Process Control. Knoxville, TN: SPC Press. The post Control Chart Wizard – Continuous/Variable Control Chart Table Of Constants appeared first on isixsigma.com.

A range bar shows the highest and lowest repeat measurement (after any explained odd results have been ignored). In this example, it looks as if the value of B is greater than A: With range bars ...

Doctors use the A1C test to check for prediabetes and diabetes. A range of 5.7 to 6.4% suggests a person may have prediabetes. Over 6.5% indicates diabetes. This test also helps doctors monitor ...