Re: [R] Letters group Games-Howell post hoc in R

2018-01-18 Thread Meyners, Michael
Januar 2018 13:51 > To: R-help@r-project.org > Subject: [R] Letters group Games-Howell post hoc in R > > Hello everybody, > > I use the sweetpotato database included in R package: > > data(sweetpotato) This dataset contains two variables: yield(continous > variable) and v

[R] Letters group Games-Howell post hoc in R

2018-01-16 Thread David Bars Cortina
Hello everybody, I use the sweetpotato database included in R package: data(sweetpotato) This dataset contains two variables: yield(continous variable) and virus(factor variable). Due to Levene test is significant I cannot assume homogeneity of variances and I apply Welch test in R instead of on