SPC Blog

It is time to replace the average/range method and ANOVA method for Gage R&R studies. Evaluating the Measurement Process (EMP)

You are a front-line operator. Who gets the blame when something goes wrong? Far too often, you do – the

Have you heard of Dr. W. Edwards Deming? Do you remember who he was? Dr. Deming was one of the

Our last blog, The Red Bead Experiment, described a simple process to teach variation to everyone. This blog describes another

Our last blog, A True Story about Variation, showed how leadership was blaming operators for process problems. They did not

To really understand common and special causes of variation, many people must change their paradigm. The following is a true

Our last blog – Are My Data Normally Distributed?– involved using a normal probability plot to answer that question. Essentially,

You have a set of data. You would like to know if the data comes from a normal distribution. How

Measurements tell us many things. They tell us if a product is within specification, if we met our goal, if