If you look at a slum, does it have many characteristics of cities in general, but with depressed socioeconomic variables?

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Nevertheless, due primarily to the negative impressions many people have about so-called "trailer parks, " the value of a manufactured home is less than a third of a comparable site-built home, even when variables such as neighborhood, structural characteristics and geography are controlled, according to an analysis published in the Journal of Real Estate Research.

WSJ: 'Luxurious' Mobile Homes?