Glossary Terms Archive

Improvement Kata

The improvement kata is a systematic four-step routine aimed at achieving a goal. Its purpose is to foster scientific thinking and creativity to overcome organizational challenges. This process enables organizations to enhance their operational efficiency and...

I-MR Chart: Mastering Individual Moving Range Control Charts

Statistical process control revolutionizes quality management through powerful visualization tools that monitor process stability over time. Among these tools, the I-MR chart stands as one of the most versatile and widely-used control charts in manufacturing, service...

Gage R&R

What is Gage Repeatability and Reproducibility? Gage Repeatability and Reproducibility (Gage R&R) is a method used to determine the amount of variance in measurement data caused by the measurement system. The system compares the measurement variation with the...

C-Chart in Six Sigma: Definition, Formula, UCL/LCL, and When to Use It

The c-chart is an attribute control chart that monitors the total count of defects in a constant-size inspection unit. It uses the Poisson distribution to calculate its control limits. The centerline is the average number of defects per unit (c-bar). The Upper Control...

Full Factorial Design: Formula, Example, and When to Use It

A full factorial design is a DOE (Design of Experiments) approach that tests every possible combination of factors and levels, at least once. Because nothing is left untested, a full factorial design can estimate every main effect and every interaction between factors...