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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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Can I Just Delete Some Values to Reduce the Standard Variation in My ANOVA?
We received the following question via social media recently:I am using Minitab 17 for ANOVA. I calculated the mean and standard deviation for these 15 values, but the standard deviation is very high....
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A Little Trash Talk: Improving Recycling Processes at Rose-Hulman
The Six Sigma students at Rose-Hulman Institute of Technology are at it again! A few months back, we blogged about the Six Sigma project they did to reduce food waste at the on-campus dining...
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Bar Chart: Where to Start?
Whether you’re just learning statistics or you're already using data analysis on the job, there are not many tools more straightforward than a bar chart. Bar charts are effective at getting across...
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How to Use Brushing to Investigate Outliers on a Graph
There’s a lot going on in the world, so you might not have noticed that the Organization for Economic Development (OECD) released their new set of health statistics for member nations. On the OECD...
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Some Stats on the American Statistical Association’s Membership in its 175th...
Did you know that this year the American Statistical Association (ASA) is celebrating its 175th anniversary? That’s a pretty significant birthday!On the ASA’s 175th anniversary webpage, they publish...
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Guest Post: Did Ma's Diabetes Get Cured by Back Surgery?
The Minitab Fan section of the Minitab blog is your chance to share with our readers! We always love to hear how you are using Minitab products for quality improvement projects, Lean Six Sigma...
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Two-Way ANOVA in Minitab 17
After upgrading to the latest and greatest version of our statistical software, Minitab 17, some users have contacted tech support to ask "Wait a minute, where is that Two-Way ANOVA option in Minitab...
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Where Did All the World Cup Goals Go? Find Out with a 2-Sample Poisson Rate...
A few weeks ago I looked at the number of goals that were being scored in the World Cup. At the time there were 2.9 goals per game, which was the highest since 1970. Unfortunately for spectators who...
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Blind Wine Part I: The Experiment
Already relaxed on his first day in Napa, Brutus and his wife Suzy decide to visit their favorite winery just before lunch to taste their new Cabernet Sauvignon. The owner recognizes them as they walk...
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Blind Wine Part II: The Survey
In Blind Wine Part I, we introduced our experimental setup, which included some survey questions asked ahead of time of each participant. The four questions asked were:On a scale of 1 to 10, how would...
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Pareto Charts Show Which Data Breach Incidents are Most Common
Everyone loves a Pareto chart. That is, everyone who knows that Pareto charts are a type of bar chart ordered by bar size to help you to determine which bars comprise the vital few that you care about...
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Blind Wine Part III: The Results
In Part I and Part II we learned about the experiment and the survey, respectively. Now we turn our attention to the results...Our first two participants, Danielle and Sheryl, enter the conference room...
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Blind Wine Part IV: The Participants
In Part I, Part II, and Part III we shared our experiment, the survey results, and the experimental results. To wrap things up, we're going to see if the survey results tied to the experimental results...
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Investigating Starfighters with Bar Charts: Function of a Variable
Last time, we went over Bar Charts you could create from Counts of Unique Values. However, sometimes you want to convey more information than just simple counts. For example, you could have a number of...
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How Accurate are Fantasy Football Rankings?
The calendar just flipped to August, meaning it’s time to get ready for fantasy football season! As you prepare for your draft, you will no doubt be looking at all sorts of rankings. But when the...
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Cuckoo for Quality: A Birdseye View of a Classic ANOVA Example
If you teach statistics or quality statistics, you’re probably already familiar with the cuckoo egg data set.The common cuckoo has decided that raising baby chicks is a stressful, thankless job. It has...
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A Fun ANOVA: Does Milk Affect the Fluffiness of Pancakes?
by Iván Alfonso, guest bloggerI'm a huge fan of hot cakes—they are my favorite dessert ever. I’ve been cooking them for over 15 years, and over that time I’ve noticed many variation in textures,...
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How Deadly Is this Ebola Outbreak?
The current Ebola outbreak in Guinea, Liberia, and Sierra Leone is making headlines around the world, and rightfully so: it's a frightening disease, and last week the World Health Organization reported...
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Is the Risk of an Ebola Pandemic Even Worth Worrying About?
In his post yesterday, my colleague Jim Colton applied binary logistic regression to data on the current ebola virus outbreak in Guinea, Liberia, and Sierra Leone, and revealed that, horrific as it is,...
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