The course introduces the foundations for statistical economic (econometric) models, linear econometric models, and inference with linear econometric models when observations are independent and the sample size is large. it shows how linear models can be used to evaluate and quantify theoretical relationships and forecast counterfactual economic outcomes. Part of four-course, year-long sequence (APEC 8211-2-3-4). prereq: ApEc 5031 or equiv OR Ph.D. student OR instr consent