\section{Results} \begin{table}[h] \begin{center} \begin{tabular}{l c r r r} \toprule Task & Attempt & \texttt{\#} revisions & Tree depth & Largest cluster\\ \midrule \texttt{checksum} & \texttt{3b@3} & 2 & 1 & 1\\ \texttt{checksum} & \texttt{cb@3} & 3 & 1 & 2\\ \texttt{grade} & \texttt{1b@3} & 2 & 1 & 1\\ \texttt{grade} & \texttt{31@3} & 8 & 2 & 1\\ \texttt{grade} & \texttt{b1@3} & 2 & 1 & 1\\ \texttt{smallest} & \texttt{d2@2} & 5 & 1 & 3\\ \texttt{smallest} & \texttt{07@2} & 9 & 1 & 3\\ \bottomrule \end{tabular} \end{center} \caption{Decision tree quality on patch pool generated by MSV for IntroClass programs} \end{table}