I could use some advice on how to handle this situation. I have a Randomized Complete Block Design (RCBD) ANOVA with 5 blocks and 8 treatments, the response is dry weight of some plant, there is 1 replication for each cell in the RCBD, except in 1 case where the measurement could not be taken due to the plant expiring.
When I perform ANOVA with a fixed block factor the residuals are approximate normal but not homogeneic.
I have tried some simple transformations but to no avail (I am not that interested in transformations either, I'd much rather use some robust method)
I have managed to run HC estimation BUT the methods used, Anova() from car package and robustreg in SAS, does not produce Residual SS, which I need to calculate simultaneus tests. Further, I am unsure if these methods compensate for the empty cells.
Could you guys point me in the right direction?