MANE 6313¶
Week 4, Module C¶
Student Learning Outcome¶
Analyze simple comparative experiments and experiments with a single factor.
Module Learning Outcome¶
Justify model assumptions incorporated in One-Way Analysis of Variance.
Model Adequacy Testing¶
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Normality
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Most often checked with normal probability plots of residuals
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Will detect non-normality and outliers
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Residual Analysis
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Plot of residuals in time sequence
- Will detect correlation between residuals and also process drift
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Plot of residuals versus fitted values
- Will detect non-constant variance
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Plot of residuals versus factors
- Will detect non-constant variance
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Standardized Residuals¶
- Interpretation is easier if the residuals are standardized
AOV Structure¶
Graphical Normality Check in R¶
Shapiro-Wilks Normality Test¶
Simple Residual Plot¶
Cluttered Residual Plots¶
Single Residual Plot¶
Standardized Residual Plot¶
One More Residual Plot¶
