Endogenous co-regressor… Not what you think!

In classic econometrics textbooks and classes, we often associate endogeneity to the correlation or relationship with the error term from a regressor. This is correct and fully agreed upon across authors and professors. But there’s some kind of new endogenous behavior that may not be correlated with the error/residual only, and it may be a […]

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Government and Transparency: An Applied Econometric Case for Colombia

In modern times, there has been an integration of the technologies of information and the public sector, which are strictly correlated with the development of open government policies across the world. This is an increasing concern in empirical approximations from the field of Public Economics, in the sense that we can ask several questions regarding

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Modeling Asset Prices with Geometric Brownian Motion in Python

One landmark theorem in Financial Economics is the Efficient Market Hypothesis (EMH). This theorem posits that in an arbitrage-free market, we can model an asset’s present price as the discounted expected future price: We can take the natural logarithm to show that the natural logarithm of asset prices follows a random walk – the best

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حاجات اتعلمتها فى الغربة 2

انا كنت كتبتلوا من فتره عن الحاجات اللى اتعلتها فى الغربة وكنت بصراحة بكتب و مش متوقعه ان فيه حد يقرا اللى كتبتبه اصلا, لقيت انه اتقرا كتير و الناس اتخيلت اني كمان كاتبة و مشهورة مع ان دي كانت اول مره اكتب فيها حقيقي المهم انا عجبنى الموضوع لاني حسيت اني ممكن افيد بصورة

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Threat to validity of regression analysis – Omitted Variables Bias

Most of the readers of this blog would be familiar with ordinary least squares estimator and regression models. Let us talk about one source that can cause these estimates and models to be biased and inconsistent. This is especially important when we think about the causal relationship of interest or the relationship which being studied.

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