Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions.Īll this and much more is available to you absolutely free when you register for an account, so join our community today today!.Post photos, respond to polls and access other special features.Participate in over 40 different forums and search/browse from nearly 3 million posts.

As a registered Guest you will be able to: To gain full access to our forums you must register for a free account. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions Welcome to, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R.By continuing to use the website, you consent to our use of cookies. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. See How to Change Control Chart Rules in QI Macros.We use cookies to improve your website experience. However, you can easily switch to the Westgard Rules using the QI Macros menu. QI Macros use Montgomery's Rules as the default. Westgard rules and many other rule sets are Included in QI Macros add-in for Excel Westgard rule #9 is unique and is not included in other control chart rule sets. Four points above/below 1 sigma (4 1s) or two points in a row with one above and one below 2 sigma ( R4s).A trend of seven points in a row increasing or decreasing (7 t).Eight points in a row above/below the center line (8 x), note: this rule will catch 9-12 x.One point above UCL or below LCL (1 3s).Westgard rules include Western Electric rules 1, 2, and 4 and Nelson's Rule 5. They use a combination of traditional rules and some unique rules not used in other rule sets. Westgard Rules are used with Levey Jennings Charts in laboratories. Free Agile Lean Six Sigma Trainer TrainingĬontrol Charts » Control Chart Rules » Westgard Rules Westgard Rules for Levey Jennings Charts Labs running control charts use Westgard rules.Animated Lean Six Sigma Video Tutorials.

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