[R] [r] ANCOVA method

2010-12-03 Thread Francesco Nutini
Dear [R] Users, I have implemented a linear model with this syntax: model- lm (var_dependent ~ var_indipendent + factor + var_indipendent : factor, dataframe) anova (model) Response: var_dependent Df Sum Sq Mean Sq F valuePr(F)

Re: [R] [r] ANCOVA method

2010-12-03 Thread Bert Gunter
Francesco: 1. You need to seek local statistical help. 2. The answer to your question is: it depends in how you define influence significantly. If you define it as the interaction term is significant then, by definition the answer is yes. If you want to understand what is going on and make