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INTRODUCTION TO APPLIED ECONOMETRICS ANALYSIS USING STATA

JUSTIN DORAN, JANE BOURKE & ANN KIRBY

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Published by NuBooks, an imprint of Oak Tree Press, Ireland.

www.oaktreepress.com / www.SuccessStore.com

© 2017 Justin Doran, Jane Bourke & Ann Kirby

A catalogue record of this book is available from the British Library.

ISBN 978 1 84621 190 4 (PDF)

ISBN 978 1 84621 191 1 (ePub)

ISBN 978 1 84621 192 8 (Kindle)

Cover image: Copyright reamolko / 123RF Stock Photo

All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, including photocopying and recording, without written permission of the publisher. Such written permission must also be obtained before any part of this publication is stored in a retrieval system of any nature. Requests for permission should be directed to info@oaktreepress.com.

CONTENTS

1INTRODUCTION

2THE CLASSICAL LINEAR REGRESSION MODEL

3GOODNESS OF FIT – F-TESTS AND R2

4HYPOTHESIS TESTING OF INDIVIDUAL COEFFECIENTS – T-TESTS

5AN OVERVIEW OF A COMPLETE REGRESSION ANALYSIS – ESTIMATION, F-TEST, R2, AND T-TEST

6BINARY INDEPENDENT MODELS

7MULTICOLLINEARITY

8HETEROSCEDASTICITY

9AUTOCORRELATION

10STATIONARITY

11BINARY DEPENDENT VARIABLES

REFERENCES

APPENDICES

1F-TABLES

2T-TABLES

3US ACS 2014 CODE

4A PRIMER ON STATA

THE AUTHORS

OAK TREE PRESS

1: INTRODUCTION

Applied econometric analysis is used across many disciplines and in many branches of economics, from studies of macroeconomic models such as the Solow or endogenous growth theory to microeconomic theories of consumer preference. Increasingly, data is becoming more readily available and software has become more powerful, enabling the analysis of numerous economic phenomenon. The aim of this ebook is to guide the student through applied econometric examples, using real world data. The focus is on using statistical software, in this case Stata, to perform analysis rather than on econometric theory.

The topics explored in this ebook are as follows: initially, the linear regression model is explored and concepts such as coefficients, F-tests and t-tests, and the R2 value are covered. Following from this, some of the most common problems that occur in regression analysis are explored, including the following breaches of the assumptions of the classical linear regression model: multicollinearity, heteroscedasticity and autocorrelation. Topics in time series analysis are also touched upon, including tests for stationarity. Finally, we consider binary dependent variables.

This text builds upon the Survey & Questionnaire Design: Collecting Primary Data to Answer Research Questions ebook by Kirby, Bourke & Doran (2016). In that ebook, the methods of primary data collection are discussed, as is how to develop a research question. This ebook builds upon this foundation by showing students how to apply econometric techniques to analyse data that they have collected themselves or sourced from secondary data sources.

The text uses the Stata software package. A primer for Stata is presented in Appendix 4 and the companion website (www.justindoran.ie/ebook.html) contains: