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Quality Improvement in Healthcare: Showing if process changes actually...
Via Christi Health, the largest provider of healthcare in Kansas, operates a Center for Clinical Excellence that's made up of a team of quality practitioners, all who have Lean and Six Sigma training....
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Why Is the Office Coffee So Bad? A Screening Experiment Narrows Down the...
NOTE: This story reveals how easy it can be to identify important factors using the statistical method called Design of Experiments. It won't provide easy answers for making your own office's coffee...
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Making the Office Coffee Better with a Designed Experiment for Optimization
NOTE: This story will reveal how easy it can be to optimize settings using the statistical method called Design of Experiments, but it won't provide easy answers for making your own office coffee any...
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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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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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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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Quality Improvement in Healthcare: Showing if process changes actually...
Via Christi Health, the largest provider of healthcare in Kansas, operates a Center for Clinical Excellence that's made up of a team of quality practitioners, all who have Lean and Six Sigma training....
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Taking the Training Wheels Off: Rethinking How Lean Six Sigma is Taught
Learning to ride a bike is a rite of passage for any kid, so much so that we even use the expression "taking the training wheels off" for all kinds of situations. We say it to mean that we are going to...
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How Could You Benefit from Between / Within Control Charts?
Choosing the right type of subgroup in a control chart is crucial. In a rational subgroup, the variability within a subgroup should encompass common causes, random, short-term variability and represent...
View Article“You’ve got a friend” in Minitab Support
I caught the end of Toy Story over the weekend, which is definitely one of my all-time favorite children’s movies. Now—unfortunately or fortunately—I can’t get Randy Newman's theme song,“You’ve Got a...
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How Accurate are Fantasy Football Rankings? Part II
Previously, we looked at how accurate fantasy football rankings were for quarterbacks and tight ends. We found out that rankings for quarterbacks were quite accurate, with most of the top-ranked...
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Angst Over ANOVA Assumptions? Ask the Assistant.
Do you suffer from PAAA (Post-Analysis Assumption Angst)? You’re not alone.Checking the required assumptions for a statistical analysis is critical. But if you don’t have a Ph.D. in statistics, it can...
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Using the G-Chart Control Chart for Rare Events to Predict Borewell Accidents
by Lion "Ari" Ondiappan Arivazhagan, guest bloggerIn India, we've seen this story far too many times in recent years:Timmanna Hatti, a six-year old boy, was trapped in a 160-feet borewell for more than...
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Use a Line Plot to Show a Summary Statistic Over Time
If you’re already a strong user of Minitab Statistical Software, then you’re probably familiar with how to use bar charts to show means, medians, sums, and other statistics. Bar charts are excellent...
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How Could You Benefit from Plackett & Burman Experimental Designs ?
Screening experimental designs allow you to study a very large number of factors in a very limited number of runs. The objective is to focus on the few factors that have a real effect and eliminate the...
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Analyzing NFL Ticket Prices: How Much Would You Pay to See the Green Bay...
The 2014-15 NFL season is only days away, and fans all over the country are planning their fall weekends accordingly. In this post, I'm going to use data analysis to answer some questions related to...
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