Post hoc analysis for one way anova with unequal sample size and variance

anova
r

#1

Hello,

How can we do post hoc analysis for one way anova in R when -

  1. Variances are non- homogeneous and sample sizes are equal
  2. Sample sizes are unequal but variances are homogeneous
  3. Sample sizes are unequal and non - homogeneous variances.

Thanks in advance.