MANE 6313¶
Week 5, Module C¶
Student Learning Outcome¶
Analyze simple comparative experiments and experiments with a single factor.
Module Learning Outcome¶
Analyze a RCBD using R.
Problem 4.8 (9th Edition Textbook)¶
Graphical Analysis - Boxplot Strength~Chemical¶
Boxplot Strength~Block¶
Analysis¶
- readxl() - incorrect
- readxl() - correction 1
- readxl() - correction 2
- R Data
- agricolae package
readxl Data (incorrect)¶
- Notice degrees of freedom are incorrect
- Always double check computer and make sure output makes sense
readxl() Data, correction 1¶
- Use factor() or as.factor()
readxl() Data, correction 2¶
- Change data type when importing
readxl() Data, correction 2¶
R Data¶
agricolae without randomization¶
- Might be helpful with some homework problems
- Notice how results below match problem
- "Real" experiments should be randomized
agricolae adding response¶
agricolae with randomization¶
Post Model Fitting Analysis¶
-
Should be continued
-
Residual analysis
- Barrett's/Levene's test if needed
- Multiple comparison analysis can be done on blocks but on the treatment chemical for this example!