Modeling the relationship between a response variable and several explanatory variables via regression models. Model diagnostics and improvement. Using regression models for forecasting, Exponential smoothing. Simple time series modeling. [Offered: W] Prereq: (MATH 225/126 or 235 or 245) and (STAT 221 or 231 or 241). Antireq: ECON 321, STAT 331, 361, 371, 372, 373, 443