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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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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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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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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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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