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Tracking Covid-19

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Based on the professional literature available, there are some inconvenient truths about Covid-19 that are not always considered in the chorus of confusion that exists today. Here we summarize what is known, what has already happened, and what is to be expected based

Hospital Rankings Hold Up

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Given the complexities of healthcare, do basic statistics used to rank hospitals really work well? A study co-authored by MIT economists indicates that some fundamental metrics do, in fact, provide real insight about hospital quality.

Quality Digest Top Stories for 2019

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As usual with Quality Digest’s diverse audience, this year’s top stories covered a wide range of topics applicable to quality professionals. From hardware to software, from standards to risk management, from China trade to FDA regulations.

Phase Two Charts and Their Probability Limits

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In the past two months we have looked at how three-sigma limits work with skewed data.

An Introduction to Statistical Process Control (SPC)

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One of the key ideas in lean manufacturing is that defects should be detected as early as possible.

How Innovation Drives Economic Growth

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In 1500, China’s economy was the strongest in the world. But by the 19th century, the United States, Western Europe, and Japan had leapfrogged over China by churning out goods and services in vast quantities while the former superpower stalled.

Four Enterprise-Level Numbers to Track

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Image by Merio from Pixabay

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According to a recent LNS Research survey, 37 percent of quality leaders cite an inability to measure quality metrics as their No.

Analytics Wind Up for a Shot in Ice Hockey

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If you think it’s hard to tell how you’re doing at your job, imagine being a hockey goalie. Let’s say you block every shot in a game. Was that performance due to your superior skills? Or maybe just to a lack of skill in your opponents?

Understanding Capability of Production Processes and Measurements

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In a general sense, capability is the ability to do something. Within manufacturing, capability is given a much more specific definition. It is an expression of the accuracy of a process or equipment, in proportion to the required accuracy.

Using Control Charts in Software Applications

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Whatever the process or type of data collected, all data display variation. This is also true in software development.

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