Class #11: Tuesday September 29, 2015

1. R: Comparing means visually with boxplot() and statistically with aov(). Stack data with stack() and post hoc testing and anova model with TukeyHSD().

2. ANOVA and Regression from Discovering Statistics Using R (DSUR) book.

   The Dummy.dat data file for the DSUR example:

    
      setwd("C:/R")
      getwd()
   
      dummyData<-read.delim("Dummy.dat", header = TRUE)
   
   
   
      str(dummyData)
   

3. Floor and Ceiling