what is the difference between linear and multivariate interactions when multiplicative interaction is linear are multiplicative interactions linear can independent variables interact with each other what is non linear and additive interactions which type of interaction involves independent and dependent variables? are additive and non-additive interactions linear why are additive interaction effects non linear is multiplicative interaction non linear which type of interaction is non-linear is multiplicative interaction non linear are models with additive effects linear which variable interacts with itself? do models of nonlinearity have multiplicative interaction can an independent variable interact with itself in multiplication are multiplicative interactions a nonlinear model which variables are additive in multiplication? why is multiplication additive is multiplicative interaction non linear? why do we use additive interaction