we got an unsolicited "summary of home sales in your area" which listed number of bedrooms and baths, year built, sold price & days on market for comparables. We're supposed to make sense of this info. And with a calculator like this [ame]http://www.google.com/search?client=safari&rls=en&q=compute+correlation+coefficient&ie=UTF-8&oe=UTF-8[/ame] it's easier and may be useful if you want to price your house. For my neighborhood I found the strongest connection between days on the market and year built with the older houses being the shortest on the market, correlation = +0.79. The + means newer houses took longer to sell. But it is up to us to speculate why. I also found that the more bedrooms, the higher the selling price. More full baths & half baths actually lowered the selling price but the connection was weak, -0.43 for half baths. Same kind of speculation. The rest of the correlations, nine combinations of two each, were too small to be significant.