Winters' Method (Additive)
Graphs - Residuals versus Fits
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Winters' Method (Additive)Graphs - Residuals versus Fits |
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This graph plots the residuals versus the fitted values. The residuals should be scattered randomly about zero. Use this plot to look for the following:
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This pattern... |
Indicates... |
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Fanning or uneven spreading of residuals across fitted values |
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Curvilinear |
A missing higher-order term |
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A point far away from zero |
An outlier |
Example Output |
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Interpretation |
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Based on this plot, the residuals do not appear to be randomly scattered about zero. Evidence of nonconstant variance exists.
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