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Tips and Techniques for Statistics and Quality Improvement

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

Today we announced the winner of the Minitab Experiment ContestFord, Bobcat, Smith & Nephew, Metalor, and more than a dozen other companies from many different industries entered the contest, which focused on using a statistical technique called Design of Experiments (DOE) to solve business problems.Quality improvement professionals use DOE to create experiments that provide insight into how... Continue Reading
Careful data analysis is always important, but sometimes we need to quickly get a sense of the relationship between variables or factors.  It’s also true that pictures speak louder than raw data – you may have analyzed every last scrap of your data and run every possible test to confirm your analysis, but an effective graph shows people what your data mean in much less time than a collection of... Continue Reading

7 Deadly Statistical Sins Even the Experts Make

Do you know how to avoid them?

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Some people take to statistics and data analysis naturally. They're attracted to numbers and aren't intimidated by formulas full of arcane symbols drawn from long-dormant languages. That's not me.  My name is Eston Martz, and I gravitate to words, not numbers. In school I was the kid completely unfazed by William Faulkner and James Joyce. But Statistics? It stupefied me. I feared it. And that's a... Continue Reading
We use statistics because it's usually not practical to collect all of the data from an entire population. Instead, we sample the population, and then use statistics for that random sample to draw conclusions about the whole population.Many common statistical procedures require data to be approximately normal -- in other words, to roughly follow the bell curve.  But what happens when you have a... Continue Reading