EASYREG - Introduction to EasyReg International Herman J....

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1 Introduction to EasyReg International Herman J. Bierens Pennsylvania State University April 15, 2007 1. Introduction EasyReg (Easy Regression) International is a free econometrics software package, which can be downloaded from URL http://econ.la.psu.edu/~hbierens/EASYREG.HTM EasyReg opens with the following window, containing the menus: Picture 1: EasyReg front window
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2 The date displayed in Picture 1 is the compilation date, i.e. the date of the installation files. However, it is possible that some upgrades have not yet been included in the installation files involved. Therefore, after installing EasyReg, it is recommended that you upgrade it, via menu item "WWW > Upgrade EasyReg to the latest version." EasyReg ( Easy Reg ression) conducts a wide variety of econometric estimation, testing and forecasting tasks on all 32 bit Windows platforms, simply by point-and-click. EasyReg is designed for use in empirical research (including my own), and for teaching econometrics. In the latter case the user can choose his or her own econometrics level. EasyReg is called International because it accepts dots and/or commas as decimal delimiters, regardless of the local number setting of Windows. Therefore, EasyReg runs everywhere in the world without need to adjust the setting of Windows. EasyReg has many advanced econometrics features, but here I will focus on data import, data transformations, linear regression, and Box-Jenkins time series modeling and forecasting. When you run EasyReg for the first time, most menu items are disabled, because they need data to work. Therefore, I will show first how to import data in EasyReg. 2. EasyReg data files and how to import them EasyReg can import two types of data files, Microsoft Excel files in CSV format, and EasyReg data files in space delimited text format. I will discuss the latter type first. 2.1 EasyReg data files in space delimited text format This type of file is a (Notepad or Wordpad) text file with the following format. The first line contains two numbers, the number of variables (= k ), and the missing value code (= m ), separated by at least one space. The next k lines contain the names of the k variables involved. The file names may contain any character, including spaces, commas, etc., and there is no restriction on their length. However, it is recommended to keep the variable names short, say no more than ten characters. The rest of the file contains the data entries x ( j , i ) for observation j on variable i , where i = 1,. .., k , j = 1,. ..., n , separated by one or more spaces, where n is the number of observations. Data entries with value m are interpreted as missing values, except if m = 0, which indicates that there are no missing values. Therefore, the missing value code should
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3 be chosen such that the real data entries will never take the value m , for example by choosing m = ! 99999.99.
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EASYREG - Introduction to EasyReg International Herman J....

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