We've talked about Westgard Rules for decades, and we've talked about Six Sigma for years. So what happens when we try to talk about both at the same time? Westgard Sigma Rules

You've learned about control rules. Now that you've got your control chart set up, your controls running, and your data plotting, what do you do with the rules when the dots are out?

What are the "Westgard Rules"? How do you use them?
Everything you ever wanted to know (or possibly didn't) about multirule QC.
Multirules are popularly known in the laboratory as "Westgard Rules."
Here's the best place to find out more about them.

See the power functions of the different controls rules and combinations of multirules that make up the "Westgard Rule"