Discover how quality control charts help track product standards, pinpoint issues, and ensure processes meet specifications with this essential tool for quality assurance.

2 types of variation and how we distinguish between common and special cause variation, along with how to create a rational subgroup. We also cover the equations and constants for the X-bar and R ...

Control limits, how do they work? Is it a probability limit? Is it an economic limit? Read on to find out! A control chart consists of several parts. It has two limits. The bottom dashed line is ...