can the plant density be measured using an aov model in r why does r use ancva in predicting plant density how to do aov in r what is the acova of r what is the covariate for ancova what is the difference between ancova and aov in r what is the covariate for canopy openness what data do i need to build an ancovia in r how to create ancova in r what kind of model should be made for ancova what is the covariate for ancva? what is the difference in the two variables in racov? how to do ancovva how to run an avva r model ancova analysis of plants can i use aov in r how to do ancova in r how to use aov for anacouva aov analysis of the data what is the purpose of anicova