Short-term process capability studies are conducted to establish the performance entitlement of a process. This type of capability study...

Almost all natural data on planet earth is normally distributed and most manufacturing process data is normally distributed too. What...

Build a Histogram

Before diving into the normal distribution curve, let’s start with the building block of it, the histogram. The...

In the kids’ movie Madagascar: Escape to Africa, Marty is the zoo zebra suddenly finds himself in a giant herd of zebras and he...

If you work in manufacturing, you probably see data every day. You may see it so often that you’ve become numb to it. For example,...

In 1907, Mark Twain associated statistics with lies. I’m here to debunk Mark Twain’s debunking of statistics. Statistics in...

How to Use the Two Sample T-Test

Product manufacturing provides endless improvement opportunities. I thrived in my manufacturing career...