Tips and Techniques for Statistics and Quality Improvement

Blog posts and articles about using Minitab software in quality improvement projects, research, and more.

Getting your data from Excel into Minitab Statistical Software for analysis is easy, especially if you keep the following tips in mind.

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Spring is in the air, and Easter is coming up soon! Easter occurs relatively late this year, on April 21. Some years it seems early and some it seems late. So I started wondering about the distribution of Easter dates. Which dates are more common and which are less common? 

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People in the gym get inspired by exercises that movie stars use to get a “superhero” physique. And more female superheroes in cinema now inspire more women to try free weights in the gym.

I was skeptical about this - could resistance training benefit me, if I didn't want a bulky physique? So I began measuring my workouts: after all, if you can't measure it, you can't improve it. Here is how I analyzed my fitness...

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Confidence intervals show the range of values we can be fairly, well, confident, that our true value lies in, and they are very important to any quality practitioner. I could be 95% confident the volume of a can of soup will be 390-410 ml. I could be 99% confident under 2% of the products in my batch are defective.

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On the Minitab Blog, we’ve often discussed getting data into Minitab from Excel. Here's a small sampling, in case you currently have data in Excel:

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Choosing the correct linear regression model can be difficult. Trying to model it with only a sample doesn’t make it any easier. In this post, we'll review some common statistical methods for selecting models, complications you may face, and provide some practical advice for choosing the best regression model.

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Stability is a major issue in manufacturing. Parts need to be made to specifications to allow an easy assembly of final products. Unstable behaviors generate quality problems that customers must deal with later.

Yet there are often so many consecutive steps that a slight misalignment at one will impact the entire production line. Read on to see four challenges to stability, and how to address them.

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The skills to understand and work with data — and make educated decisions based on it — are in demand and they are not going away anytime soon. Let's take a look at some new directions we've seen in the workforce over the last few years, as well as how executives are treating upskilling their teams as a top priority.
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At Minitab, we want our users to focus their time on drawing sensible conclusions from their data that they can use to resolve business problems or take advantage of opportunities. However, with more and more sources of data available, you often spend more time getting ready for analysis and less time interpreting it.

Here are four ideas that demonstrate how Minitab macros deliver “one-click analysis” for the...

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How do you plan to celebrate Valentine’s Day this year? Maybe it will involve buying a gift for your sweetheart, or perhaps a special dinner out? Well if you are participating, you might find it easier to get a table at a nice restaurant. According to the National Retail Federation (NRF), fewer consumers are celebrating Valentine’s Day in 2019 but those who do are planning to spend more.

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