yijr definition r fit multiplicative model which multiplicative model can be used for a multiplexer? what is the common method for fitting multiplicative data in r how to fit a multiplicative model if the multiplicative interaction is heterogeneous and panelist-dependent how to fit multiplicative model in r what is the multiplicative coefficient of a model yijr is what multiplicative interaction how do you fit multiplicative model in r why use multiplicative equations in r what is the multiplicative equation what is r multiplicative model why is multivariate model used in r what is the multiplicative interaction in r how to fit r multiplicative model which multiplicative interaction is heterogeneous? how to use multiplicative model r if multiplicative model is heterogeneous __________. does an r model contain a multiplicative interaction