By Diana Olick, CNBC Real Estate Reporter
NEW YORK ( CNBC) -- This week brought a lot of positive news on the home sales front, with contracts signed for existing homes in December up 2 percent month-to-month and sales of newly built homes up over 17 percent month-to-month. It has a lot of housing watchers confused as to why the other big report of the week, the S&P/Case-Shiller Home Price Index, still showed prices falling. The bottom line is that reporting home sales is far easier and far more basic than figuring out home prices.
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