\begin{tabular}{lrcc}
\toprule
Segment & $n$ (test) & OLS quadratic & Gradient boosting \\
\midrule
Condo & 14,848 & 20.4 & 9.1 \\
Cottage & 2,109 & 33.9 & 32.1 \\
Plex & 15,115 & 18.5 & 16.5 \\
Single family & 69,835 & 17.2 & 15.1 \\
Muni 1k--10k sales & 37,419 & 15.2 & 14.5 \\
Muni $<$ 1k sales & 29,253 & 23.3 & 18.7 \\
Muni $>$ 10k sales & 36,257 & 17.8 & 11.9 \\
\bottomrule
\end{tabular}