Econometrics - Theory and Practice

O.P. Jindal Global University via Coursera

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Overview

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Welcome to the Econometrics - Theory and Practice course! By the end of this course, you will understand the statistical tools required to comprehend empirical economic research and plan and conduct your independent research projects. This course introduces you to econometric model formulation, estimation of the chosen model using quantitative data, testing hypotheses about the phenomenon under study, post-estimation diagnostics to see how well the model performs, and the commonly encountered problems, such as multicollinearity, heteroscedasticity, autocorrelation, and model specification errors. It builds on the research awareness and skills developed in the quantitative and qualitative analysis courses covered earlier in the program. Major topics in econometrics will be covered from the point of view of their real-world applications. This is a beginner course intended for learners with a background in statistical methods. The knowledge you gain from this course will enable you to pursue and apply empirical economic research in policy analysis and formulation. To succeed in this course, you should have a basic understanding of statistical techniques. You should be familiar with basic concepts in probability theory, hypothesis testing, and statistical inference. Additionally, you’ll need a working grasp of Stata. Please watch the Stata introduction video if you have never used Stata before.

Syllabus

Scope of Econometrics and Introduction to Simple Linear Equation

In this module, you will learn about the scope of econometrics, economic models, and econometric models. You will then be introduced to regression analysis between one dependent variable and one independent variable. Further, you will revise the concepts of individual, conditional, and joint distributions and the concept of variable independence. Later, you will learn how to identify relationships between two variables. And lastly, you will explore the general nature of the linear regression model.

The Linear Regression Model With One Explanatory Variable

In this module, you will learn about the theory and practice of simple linear regression with one dependent variable and one independent variable. Simple linear regression is a statistical method that allows us to summarize and study relationships between two variables and goes beyond exploring the simple correlation between them. You will first learn the estimation and interpretation of the estimators of a regression model. Then, you will be able to understand those estimators’ numerical and statistical properties. Lastly, you will work with some practical, functional forms to handle nonlinearities in regression models.

The Linear Regression Model with Multiple Explanatory Variables

In this module, you will move from the simple linear regression model with one regressor to the multiple linear regression model with two or more regressors. We use the adjective “simple” to denote that a model has only one regressor and the adjective “multiple” to indicate that a model has at least two regressors. In learning the practice of multiple linear regression, importance is accorded to building an intuitive understanding without using matrix algebra, mainly by analogy with simple linear regression. Lastly, you can derive and learn the algebraic properties of a regression model with k explanatory variables.

Hypothesis Testing and Statistical Inference

In this module, you will continue with the multiple linear regression model and use that to learn statistical inference, allowing you to infer something about the population model from a random sample. The sixth assumption of the classical linear model is the additional assumption that the population error is normally distributed. In the model, you will understand the sample distributions of the OLS estimators. Further, you will be able to review how to carry out a hypothesis test, assuming the six assumptions are true. You will also be able to do several specifications of hypothesis testing, including restrictions on a single parameter, a combination of two parameters, exclusion restrictions, tests of overall significance, and multiple linear restrictions. To conclude, you will be using the t-statistic and F-statistic.

OLS Asymptotics and Further Issues in Multiple Regression Analysis

In this module, you will continue with the multiple linear regression model and explore the asymptotic properties of the OLS estimators, which holds true when you transition from a small sample to a large sample. These properties are also known as the large sample properties. Post OLS asymptotics, you will learn about some extensions of the linear regression model, which are mostly used in applied work. You will further explore regression models, which are three different functional forms of explanatory models. Starting with the case when you have quadratic terms of the explanatory variable, you will discuss regression models with categorical explanatory variables. Finally, you will understand the regression models involving the interaction of explanatory variables as regressors.

Critical Evaluation of the Classical Linear Regression Model-I

In this module, you will keep using the multiple linear regression model and analyze the standard linear regression model considering the three problems that crop up most frequently when analyzing cross-sectional data. You will learn, in particular, about the bias and inconsistency arising from omitting important variables, as well as the effects of multicollinearity and heteroscedasticity in your data. You will also learn how to identify multicollinearity and heteroscedasticity in your model, test for it, and correct it using various techniques.

Critical Evaluation of the Classical Linear Regression Model-II

In this module, you will learn about data and specification errors commonly encountered in multiple linear models. You will also learn about the tests to check for model misspecification, using proxy as a possible solution for model misspecification. Further, you will be introduced to issues that crop due to measurement error in the dependent and independent variables. You will also gain an understanding of two advanced models. First is the binary response model, which is used when the dependent variable is binary in nature. Next, you will learn about the time series model. You will also get some insights into the problem of autocorrelation, which is usually encountered when we have specification errors in time series data.

End–Term Staff–Graded Assignment

This module describes the learning objectives, project brief, review criteria, grading criteria, and submission instructions for the end-term Staff Graded Assignment for the course.