determining a variable that is identical for all member of a cross section in the regression why does exchange rate vary which variable in a regression model should be identical to the same across all of the cross section members how do you include a variable in regression can a variable be a cross section variable which variable has the same value over time but is identical to each member of the cross section? what variable can be included which variable can be used to include a variable that is identical for each cross section? why do we need to include a variable in regression analysis? what is the value of the change rate for each cross section which variable is identical for all cross section members? which variable is identical in the cross section does exchange rate change over time which cross section variable is identical for all of the cross sections which variable is identical for each cross section can you include a variable in the regression can a variable be identical for each group of cross sections which variable can be an identical variable for each cross section member in the regression analysis which variable is a static panel? quizlet when adding a variable which is a cross section variable