The Null Hypothesis: Always “Busy Doing Nothing”
The 1949 film A Connecticut Yankee in King Arthur's Court includes the song “Busy Doing Nothing,” and this could be written about the Null Hypothesis as it is used in statistical analyses. The words to...
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Fundamentals of Gage R&R
Before cutting an expensive piece of granite for a countertop, a good carpenter will first confirm he has measured correctly. Acting on faulty measurements could be costly.While no measurement system...
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Leaving Out-of-control Points Out of Control Chart Calculations Looks Hard,...
Control charts are excellent tools for looking at data points that seem unusual and for deciding whether they're worthy of investigation. If you use control charts frequently, then you're used to the...
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Companion by Minitab: Desktop App and Web App Terminology (Part 1)
By now you have probably heard about Companion by Minitab®, our software for executing and reporting on quality improvement projects.We've had questions about some terminology used in the product,...
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Doing Gage R&R at the Microscopic Level
by Dan Wolfe, guest bloggerHow would you measure a hole that was allowed to vary one tenth the size of a human hair? What if the warmth from holding the part in your hand could take the measurement...
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See the New Features and Enhancements in Minitab 18 Statistical Software
It's a very exciting time at Minitab's offices around the world, because we've just announced the availability of Minitab® 18 Statistical Software.Data is everywhere today, but to use it to make sound,...
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Companion by Minitab: Deep Dive into the Desktop App (Part 2)
Companion by Minitab® is our software for executing and reporting on quality improvement projects. It has two components, a desktop app and a web app. As practitioners use the Companion desktop app to...
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A Swiss Army Knife for Analyzing Data
Easy access to the right tools makes any task easier. That simple idea has made the Swiss Army knife essential for adventurers: just one item in your pocket gives you instant access to dozens of tools...
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Companion by Minitab: Deep Dive into the Web App (Part 3)
Companion by Minitab® is our software for executing and reporting on quality improvement projects. It consists of a desktop app, which practitioners use to do project work, and a web app, which...
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Need to Validate Minitab per FDA Guidelines? Get Minitab's Validation Kit
Last week I was fielding questions on social media about Minitab 18, the latest version of our statistical software. Almost as soon as the new release was announced, we received a question that comes...
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Making Steel Even Stronger with Monte Carlo Simulation
If you have a process that isn’t meeting specifications, using Monte Carlo simulation and optimization can help. Companion by Minitab offers a powerful, easy-to-use tool for Monte Carlo simulation and...
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5 Tips to Make Process Improvements Stick!
For a process improvement practitioner, finishing the Control Phase of the DMAIC process is your ticket to move on to your next project. You’ve done an excellent job leading the project team because...
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Attribute Acceptance Sampling for an Acceptance Number of 0
Suppose that you plan to source a substantial amount of parts or subcomponents from a new supplier. To ensure that their quality level is acceptable to you, you might want to assess the capability...
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Gleaning Insights from Election Data with Basic Statistical Tools
One of the biggest pieces of international news last year was the so-called "Brexit" referendum, in which a majority of voters in the United Kingdom cast their ballots to leave the European Union...
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Getting the Most Out of Your Text Data, Part 1
With Minitab, it’s easy to create graphs and manage numeric, date/time and text data. But Minitab’s enhanced data manipulation features make it easier to work with text data, too.This is the first of...
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Cp and Cpk: Two Process Perspectives, One Process Reality
It’s usually not a good idea to rely solely on a single statistic to draw conclusions about your process. Do that, and you could fall into the clutches of the “duck-rabbit” illusion shown here:If you...
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Getting the Most Out of Your Text Data, Part 2
My previous post focused on manipulating text data using Minitab’s calculator.In this post we continue to explore some of the useful tools for working with text data, and here we’ll focus on Minitab’s...
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What Is the Difference between Linear and Nonlinear Equations in Regression...
Previously, I’ve written about when to choose nonlinear regression and how to model curvature with both linear and nonlinear regression. Since then, I’ve received several comments expressing confusion...
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What Does It Mean When Your Probability Plot Has Clusters?
Have you ever had a probability plot that looks like this?The probability plot above is based on patient weight (in pounds) after surgery minus patient weight (again, in pounds) before surgery.The red...
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Getting the Most Out of Your Text Data Part III
The two previous posts in this series focused on manipulating data using Minitab’s calculator and the Data menu.In this third and final post, we continue to explore helpful features for working with...
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