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A scatter plot matrix is used to evaluate the correlation or cause-effect
relationship (if any) between two or more variables (e.g., color, residue
and perceived quality in shampoo).
When you're investigating cause-effect links between two or more indicators
then you can use the scatter plot matrix to quickly identify correlations.
If the points are tightly clustered along a line like machine gun stitching,
then there's probably a strong correlation. If it looks more like a shotgun
blast, there is no correlation.
The Scatter Plot Matrix is just one of the tools included in the QI
Macros for Excel SPC Software for Excel.
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the FREE 30-day Evaluation copy of the QI Macros Excel SPC Software for Six Sigma
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