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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 Minitab

1. Select Raw Data:


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


3. Click on “U Chart Options”:


4. Click “OK”

5. Click ‘OK” again:


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