The Federal Reserve Bank of Dallas hosts an “International” database of these values going back to 1975. These quantities from a 506-row dataset named for Boston are used as y-values in Leo Breiman’s paper debuting the ML technique of bagging. A 1978 paper by Allen Goodman proposed using Box-Cox transformation to choose functional forms in “hedonic estimation” of these quantities. Capitalization of TSP levels into these quantities was used by Chay and Greenstone to find the value of clean air. Allan Weiss helped develop a measure based on these quantities, which has Composite 10 and Composite 20 versions. “Repeat-sales” data informs the Case–Shiller index of these quantities, which fell for two years before the 2008 recession. For 10 points, identify these retail values of a type of thing often bought with the aid of a 30-year mortgage. (10[1])■END■