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\newcommand{\thisCourse}{STAT 225: Linear Models}
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\author{Ole J. Forsberg}
\title{Data Sources}
\date{February 13, 2023}









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\section*{Data Sources}
\noindent
The following are the sources used for the data file:

\begin{itemize}
 \item \textbf{Dependent variable}: Number of terrorist attacks. \\ 
 START Project at the University of Maryland \\ 
 \url{https://start.umd.edu/data} \\
 
 
 \item \textbf{Research variable}: Left-Right orientation of the head of government. \\
 PennWorld Tables \\
 \url{https://www.pwt.org/uploads/20220216/data} \\
 
 \item \textbf{Control variables}: 
 \begin{itemize}
   \item Population of the state \\
   PennWorld Tables \\
   \url{https://www.pwt.org/uploads/20220216/data} \\

   \item Democracy level in the state \\
   Polity V \\
   \url{https://polity.harvard.edu/downloads} \\

   \item Presence of terrorist activity in the previous year \\
   START Project at the University of Maryland \\ 
   \url{https://start.umd.edu/data} \\
 
 \end{itemize}
\end{itemize}






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