Build a Histogram

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

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

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, how often...

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

How to Use the Two Sample T-Test

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

Tools for the Trenches is setting out on a journey to explore our industrial heritage. Manufacturing has been my career home for over 40 yea...

Six-sigma is a popular buzz word in plants, but do you understand the basics of what it means?  The grass roots explanation of six-sigma is ...