Upper Control Limit And Lower Control Limit Calculator

Introduction & Importance

Upper Control Limit (UCL) and Lower Control Limit (LCL) are crucial in statistical process control, helping to monitor and control product quality. They define the acceptable range for a process, with a high degree of confidence.

For more information, refer to the following authoritative sources:

• ISO 3534:2006 – Statistics – Vocabulary and symbols
• NIST – Process Capability and Performance