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Problems With Bubble Plots

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With the click of your mouse you can turn a list of values into a bubble plot. No thought or effort is required. Simply sit back and let the software gods do the heavy lifting of transforming your list of numbers into a fancy graph. What could possibly go wrong?

Fighting Crime With Statistics

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Photo by Andrew Lichtenstein/Corbis via Getty Images

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If Fyodor Dostoyevsky had been a mathematician, he might have written a book called Crime and Statistics. However, since “statistics” doesn’t have quite the same ring as “punishment,” it wouldn’t have sold as well.

Watch Out for the Big Data Steamroller

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“People think that if you collect enormous amounts of data you are bound to get the right answer. You are not bound to get the right answer unless you are enormously smart.”

What Is the Probability That Your Process Is Predictable?

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Control Charts: Keep It Simple

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The control chart is at the heart of the very definition of quality. It is central to building, maintaining, and predicting quality into the future. However, control charts today, more often than not, are misused and misunderstood.

Metrics: The Good, the Bad, and the Ugly

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This is part three of a three-part series.

Model-Based Definition: A Seven-Point Summary

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Annalise Suzuki, director of technology and engagement at software provider Elysium Inc., spoke to Quality Digest about the importance of model-based definitions (MBD) for data quality, validation, and engineering

Reverse-Engineer Your Experiments

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In designed experiments, not only must you choose appropriate variables, you must also consider sample size.
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Everybody wants to design and conduct a great experiment! To find enlightenment by the discovery of the big red X and perhaps a few smaller pink x’s along the way.

Why Simulation Is the Future of Uncertainty Evaluation

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In this article I will show that the conventional method for calculating uncertainty is not always reliable.

Why Did Shewhart Place a Premium on Time Order Sequence?

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Walter Shewhart, father of statistical process control and creator of the control chart, put a premium on the time order sequence of data.

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