Category Archives: Data

Measurement and Data Collection

This is my response to the Deming Electronic Network message (the site is dead, so I removed the link) on measurement. I find it useful to ask what will be done with the results of data collection efforts (in order … Continue reading

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Targets Distorting the System

I still remember Dr. Brian Joiner speaking about process improvement and the role of data well over a decade ago. He spoke of 3 ways to improve the figures: distort the data, distort the system and improve the system. Improving … Continue reading

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Statistics for Experimenters – Second Edition

The classic Statistics for Experimenters has been updated by George Box and Stu Hunter, two of the three original authors. Bill Hunter, who was my father, and the other author, died in 1986. Order online: Statistics for Experimenters: Design, Innovation, … Continue reading

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Control Charts in Health Care

This post is an edited version of a message I sent to the Deming Electronic Network. I find the “control charts in health care” thread quite interesting. From Mike Woolbert’s post [link broken, so I removed it] > I have … Continue reading

Posted in Data, Deming, Health care, Management, Quality tools, Statistics | Tagged , , , , , , , , | 3 Comments

Dangers of Forgetting the Proxy Nature of Data

We use data to act as a proxy for some results of the system. Often people forget that the end result is not for the number to be improved but for the situation to be improved. We hope, if the measure improves the situation will have improved. But there are many reasons this may not be the case (one number improving at the expense of other parts of the system, the failure of the number to accurately serve as a proxy, distorting numbers, etc.). Continue reading

Posted in Data, Deming, Management, Popular, quote, Systems thinking | Tagged , , , , , , , , , | 7 Comments