SPC Blog
What is Evaluating the Measurement Process (EMP)?
It is time to replace the average/range method and ANOVA method for Gage R&R studies. Evaluating the Measurement Process (EMP)
It is Your Fault!
You are a front-line operator. Who gets the blame when something goes wrong? Far too often, you do – the
Dr. W. Edwards Deming and Profound Knowledge
Have you heard of Dr. W. Edwards Deming? Do you remember who he was? Dr. Deming was one of the
Variation and the Funnel Experiment
Our last blog, The Red Bead Experiment, described a simple process to teach variation to everyone. This blog describes another
The Red Bead Experiment
Our last blog, A True Story about Variation, showed how leadership was blaming operators for process problems. They did not
A True Story About Variation
To really understand common and special causes of variation, many people must change their paradigm. The following is a true
Part 2: Are My Data Normally Distributed?
Our last blog – Are My Data Normally Distributed?– involved using a normal probability plot to answer that question. Essentially,
Are My Data Normally Distributed?
You have a set of data. You would like to know if the data comes from a normal distribution. How
How Can We Trust Our Measurement Process?
Measurements tell us many things. They tell us if a product is within specification, if we met our goal, if