why use multiple regression regression in a econometric model how are multiple levels of regression different from one other? can you use multiple level regression fdi data how to do multiple levels regression what is the regression for fdi when do multiple layers regression fdi occur what is the difference between single and multiple level regression? when do multiple layer fdi analysis occur? which factor can be used to predict the evolution of investment in a country? what variables are used in multiple regression analysis how many layers of regression do you use to work a fdi model why do you do multiple layer regression how to work out multiple scale regression model what is the model of multiple tier regression for econometrics how is multiple-scale regression useful different types of regression analysis what is multiple layer regression model why is multiple layer regression important how many layers of regression for fdi what is multiple level regression in FDI