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
