Change Analysis in Quality Improvement

Shewhart Charts versus Manhattan Control

Shewhart Charts versus Manhattan Control

Dr Juergen Ude Dr Juergen Ude 21 March 2019

The objective of this article is to show problems with Shewhart charts and to compare these with Manhattan control charts.

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Patient X reduces his chances of a second heart attack using Change Analysis

Patient X reduces his chances of a second heart attack using Change Analysis

Mr Christopher Ude Mr Christopher Ude

The following is about a 62-year-old heart patient, whom was alerted to dangerously high blood pressure (despite taking BP medication) using Change Analysis, and how these insights were used in conjunction with the assistance of his doctor to identify a medication in-efficiency.

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Shewhart vs Manhattan Control

Shewhart Charts vs Manhattan Control

Dr Juergen Ude Dr Juergen Ude

Shewhart charts were first introduced by Dr. Walter Shewhart early this century. Their logic is extremely simple. There is a natural amount of variation in measurements, which we should not react to other than through major process changes.

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Manhattan or Shewhart chart

Shewhart charts OR Manhattan?

Dr Juergen Ude Dr Juergen Ude

There are many schools of thoughts on the best application of control charts. The general opinion is that the control chart is a tool for continuous improvement, whereby assignable causes are identified and removed.

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Time to replace Shewhart Control charts with Change Analysis

Take A Trip To Manhattan - with control technology

Dr Juergen Ude Dr Juergen Ude

If the quality profession wants others to improve, then it too must seek to improve. Unfortunately there seems to be no sign of improvement in quality technology.

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Time to replace Shewhart Control charts with Change Analysis

Time to replace Shewhart Control charts? Computer algorithms show the way, says Dr. Juergen Ude. (Part 2)

Dr Juergen Ude Dr Juergen Ude

It may seem hard to understand why Manhattan Control was forgotten, why statisticians and consultants have not promoted them. I believe that the reasons are simple. When Manhattan Control was first introduced, personal computers were not available....

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Time to replace Shewhart Control charts with Change Analysis

Time to replace Shewhart Control charts? Computer algorithms show the way, says Dr. Juergen Ude. (Part 1)

Dr Juergen Ude Dr Juergen Ude

Historically process control has been performed with the Shewhart Control chart, such as the Individuals chart. Shewhart control charts are often hailed as the most important quality improvement tool.

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Blood glucose bought back into a state of control using Change Analysis

Blood glucose bought back into a state of control

Mr Christopher Ude Mr Christopher Ude

The following is about a 55-year-old diabetic, Patient X, who successfully brought her blood glucose back to a state-of-control through lifestyle changes, using change analysis as her tool of insight.

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About Change Analysis

About Change Analysis

Dr Juergen Ude Dr Juergen Ude

Change Analysis is used to detect changes in chronological ordered data. Using machine power algorithms, combined with statistical significance testing, changes in the process average, standard deviation and slopes can be rapidly detected.

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WHO WE ARE

Qtech International has specialized in the development of quality information systems and analytic technologies for leading manufacturing corporations for 30 years in 40 countries. Our research into machine-powered algorithms has spanned over 10 years, with foundation research being university supervised prior. Research has involved many sectors, including manufacturing, health, political campaigning, retail, finance and more.

www.qtechinternational.com