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What’s A U Chart?

U Charts are Control Charts designed for tracking the number of defects per unit for discrete data.

A classic example of a C Chart is to track the number of scratches on new smart phone cases at a manufacturing facility.

Learn more about U Charts in Control Phase, Module 6.1.7 of Black Belt Training.

How To Run A U Chart In SigmaXL

Download the U Chart Data Set for SigmaXL here.

1. Highlight the Raw Data:


2. Go to Stat > Control Charts > Attribute Charts > U:


3. Click “Next>>”:


4. Click “OK>>”:


5. Click “OK”:


To learn more about U Chart, register for Black Belt Training and review Control Phase, Module 6.1.7.