Change Analysis in Quality Improvement

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Deviation from Target charts

The BIS.Net Team The BIS.Net Team

Deviation from Target charts are based on step chart change analysis. Each step is statistically compared to the specified target. If there is no significant difference the average for the step is deemed to be on target.

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Dynamic Variation Changes

Dr Juergen Ude Dr Juergen Ude

Although step changes in the standard deviation are the least popular, they should be of equal importance to other charts and in some instances even more important. In manufacturing standard deviation affects process capability and thus non-conformance.

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Dynamic Process Performance Charts

The BIS.Net Team The BIS.Net Team

Dynamic Process Performance Charts are an advanced form of Change Analysis and highly popular. They combine changes in both the average and standard deviation over time and display this information in a manner that enables the analyst to see the contribution to non-conformance.

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Dynamic Trend Chart

Dr Juergen Ude Dr Juergen Ude

There are many applications where detecting changes in the slope is important. One example is for sales forecasting where we need to see if a plateau has been reached, or if there is a downward trend requiring a new marketing campaign.

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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