Tips and Techniques for Statistics and Quality Improvement

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

This Saturday is Leap Day, so some lucky 39-year-olds on the verge of 40 get to say they're only 10! What's the easiest way to determine the probability of being born on a certain day, like February 29? It's to assume every day of the year has an equal probability of being a birthday. But ... no surprise here ... the numbers actually disagree! 

Continue Reading...

Here are some of the cute dogs in our Minitab team; pictured above from left to right is Archer, Jake, Archie, Reed, Petey and Rookie. Picture below is Birdie and King.It's Valentine's Day! Whether you're single, in a relationship, married, or something in between, Valentine's Day is a day to celebrate and share messages of affection and love with partners, family, friends and pets. And with the average for spending...

Continue Reading...

Did you know that over 790 million gallons of wine were consumed in the US in 2016? That's a lot of wine — roughly 3,950 million bottles of wine to be exact! Wine production shows no signs of slowing down either with the number of US wineries increasing by over 50% since 2009 to a total of 10,043 wineries in 2019, however Italy, France and Spain still take the title of top three wine producing countries globally....

Continue Reading...

How the taste of wine is described often reads like a poem: “full-bodied and rich but not heavy, high in alcohol, yet neither acidic nor tannic, with substantial black cherry flavor despite its delicacy...” Flowers and fruits are commonly used as descriptors, meant to help drinkers understand the flavors in a glass of wine. This poetry reflects that some consider the conversion of fruit to wine be an art form.

Yet...

Continue Reading...

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? 

Continue Reading...

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...

Continue Reading...

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.

Continue Reading...

The World Cup has finally concluded with France becoming champion for the second time. Although disappointed at not seeing England played in the final, I certainly enjoyed all the drama on pitch. In my previous post, we had a poll to get opinions from The Minitab Blog readers on who they thought would win in the final. Now, it’s time to look at the results and see how many of our readers have the ability of...

Continue Reading...

 

Previously in our designed experiment on driving the golf ball as far as possible from the tee, we tested our four experimental factors and determined how many runs we needed to produce a complete data set.

Now let’s analyze the data and interpret the covariates and blocking variables.

Continue Reading...

In our continuing effort to use experimental design to understand how to drive the golf ball the farthest off the tee, we have decided each golfer will perform half the possible combinations of high and low settings for each factor. But how many times should each golfer replicate their runs to produce a complete data set?

 

Continue Reading...