Sigma Articles

Step 1: Office Repair Microsoft has excellent instructions for how to repair Microsoft Office. They can be found at the url https://support.microsoft.com/en-us/office/repair-an-office-application-7821d4b6-7c1d-4205-aa0e-a6b40c5bb88b or by clicking the button below. If these instructions resolve your issue, then there is no need to proceed further.  Microsoft’s Instructions To Repair Office Step 2: Office Reinstall If repairing Office doesn’t […]

Symptom: When using DOE Pro (all builds), Excel stops working or crashes when creating a design, running regression, optimizing or plotting.  Cause: Office 365 version 2012 and 2102 are incompatible with some Excel 4 Macro code.  Solution: Download latest installer of DOE Pro from the Update Page.  v2101 build 13628.20274 Go To Updates Page Some

I have had many requests to explain the math behind the statistics in the article Roger Clemens and a Hypothesis Test. The math is usually handled by software packages, but in the interest of completeness I will explain the calculation in more detail. A t-Test provides the probability of making a Type I error (getting

Owners of Quantum XL 2013 recieve a discount when purchasing Quantum XL 2016. For more information contact [email protected]. To use your discount code, go to the Quantum XL Purchase page and click “Buy Now”. You will be taken to our eCommerce Partner’s website MyCommerce (see the image below).  First, adjust the quantity then click “Order Now”.