This document covers the variance and standard errors of OLS estimators along with the Gauss-Markov Theorem, explaining why OLS estimators are BLUE (Best Linear Unbiased Estimators) under standard assumptions. It discusses key features, the sampling distribution of OLS estimators, and
This document explains Regression Through the Origin, a special case of regression where the intercept term is omitted and the regression line passes through the origin. It begins with an introduction and provides economic examples where a zero-intercept model is
This section introduces the Multiple Linear Regression Model along with a practical numerical example. It explains how monthly sales revenue (Y) is influenced by multiple factors such as the price index (X₁) and advertising expenditure (X₂). The provided dataset helps
This document gives a full introduction to Econometrics, including its history, meaning, and main goals. It talks about how econometrics is different from other fields like economic theory, mathematical economics, economic statistics, and mathematical statistics. The guide also talks about
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