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Revisiting the Relationship between Rushing and NFL Wins with Binary Fitted...
Back in November, I wrote about why running the football doesn’t cause you to win games in the NFL. I used binary logistic regression to look at the relationship between rush attempts (both by the...
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Opening Ceremonies for Bubble Plots and Poisson Regression
By popular demand, Release 17 of Minitab Statistical Software comes with a new graphical analysis called the Bubble Plot.This exploratory tool is great for visualizing the relationships among three...
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The Stability Report for Control Charts in Minitab 17 includes Example Patterns
Minitab’s Assistant got a lot of splashy upgrades for Minitab 17. The addition of DOE and multiple regression to the Assistant are large feature improvements with obvious advantages. But there are many...
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Why Is There No R-Squared for Nonlinear Regression?
Nonlinear regression is a very powerful analysis that can fit virtually any curve. However, it's not possible to calculate a valid R-squared for nonlinear regression. This topic gets complicated...
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Using nonparametric analysis to visually manage durations in service processes
My main objective is to encourage greater use of statistical techniques in the service sector and present new ways to implement them.In a previous blog, I presented an approach you can use to identify...
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How to Handle Extreme Outliers in Capability Analysis
Transformations and non-normal distributions are typically the first approaches considered when the when the Normality test fails in a capability analysis. These approaches do not work when there are...
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Analyzing “Luck” in College Basketball: Part II
Two months ago, I used Ken Pomeroy’s luck statistic to analyze the “luckiest” and “unluckiest” teams in college basketball. What Ken’s luck statistic is really looking at is close games. If you win...
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Who's More (or Less) Irish?
B'gosh n' begorrah, it's St. Patrick's Day today!The day that we Americans lay claim to our Irish heritage by doing all sorts of things that Irish people never do. Like dye your hair green. Or tell...
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Predicting the 2014 NCAA Tournament
Once again it’s time for the madness of March to begin! Which teams have the best shot of going to the final four? Is there a team that might become this year’s Florida Gulf Coast? And do any of the 16...
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Create a DOE Screening Experiment with the Assistant in Minitab 17
If you’ve been looking at Minitab 17, you’ve noticed a lot of new enhancements. For me, the biggest of these is the addition of Design of Experiments (DOE) to the Assistant. DOE in the Assistant has so...
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Five Ways to Make Your Control Charts More Effective
Have you ever wished your control charts were better? More effective and user-friendly? Easier to understand and act on? In this post, I'll share some simple ways to make SPC monitoring more...
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Got Good Judgment? Prove It with Attribute Agreement Analysis
Many Six Sigma and quality improvement tools could be applied in other areas. For example, I wonder whether my son's teachers could benefit from a little attribute agreement analysis. He seemed...
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Using Statistics to Show Your Boss Process Improvements
Ughhh... your process is producing some parts that don't meet your customer's specifications! Fortunately, after a little hard work, you find a way to improve the process.However, you want to perform...
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The Best European Football League: What the CTQ’s and Minitab Can Tell Us
by Laerte de Araujo Lima, guest blogger In a previous post (How Data Analysis Can Help Us Predict This Year's Champions League), I shared how I used Minitab Statistical Software to predict the...
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Equivalence Testing for Quality Analysis (Part I): What are You Trying to...
With more options, come more decisions.With equivalence testing added to Minitab 17, you now have more statistical tools to test a sample mean against target value or another sample mean.Equivalence...
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Equivalence Testing for Quality Analysis (Part II): What Difference Does the...
My previous post examined how an equivalence test can shift the burden of proof when you perform hypothesis test of the means. This allows you to more rigorously test whether the process mean is...
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Analyze a DOE with the Assistant in Minitab 17
By now, you probably know that Minitab 17 includes Design of Experiments (DOE) in the Assistant. We already spent some time looking at 5 highlights when you create a screening experiment with the...
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Did Welch’s ANOVA Make Fisher's Classic One-Way ANOVA Obsolete?
One-way ANOVA can detect differences between the means of three or more groups. It’s such a classic statistical analysis that it’s hard to imagine it changing much.However, a revolution has been under...
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Control Chart Tutorials and Examples
The other day I was talking with a friend about control charts, and I wanted to share an example one of my colleagues wrote on the Minitab Blog. Looking back through the index for "control charts"...
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Introducing the Bubble Plot
When you're evaluating a dataset, graphical analysis can be very important. While an analysis like a regression or ANOVA can be backed up by numbers, being able to visualize how your dataset is...
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