how do you use plm to construct a model what is the function plm which function does r use that allows the data structure individual what type of data structure is used in panels what is the purpose of plm which function allows the following structure? how to model a panel model using autocorrelation how to create a panel data model with two time factors? why is individuals a random variable in panel data what is the r function of individuals how to model a panel of variables function plm can you use plm as a time factor in r how to use plm in panel which statement describes a group as a random variable in r what is the model structure of plm? what is plm in r what is panel data used for how to create the parameters for individuals in a panel how to do autocorrelation for panel data in r