In the original January 2005 market statistics the average sales price for all housing units in the Greater Northern Virginia areas was 440,426. Sales were 3,106 units.
However, in the January 2006 market summary report its says that the January 2005 sales price was 417,495. 417,495 is not equal to 440,426. The report then uses those number to say the average sales price increased 15.22% YoY ( from 417,495 to 480,931) when based on the original January 2005 number there would be a 9.1% increase.
Also in the January 2006 market summary its says that 2,298 housing units were sold in the Greater Northern Virginia area in January 2006. It continues and states that represents a 10% decrease from January 2005 numbers. So that would mean January 2005 numbers would be about 2,550. However, in the January 2005 report there were 3,106 units. If they used the original numbers of 3,106 it would mean there was a much more ominous 27% decrease in units sold compared to January of last year.
What is the truth? Are the Realtors intentionally giving out wrong statistical information or are they just making innocent mistakes?
For now, I will give the Realtors the benefit of the doubt.
Update 2/16/ 4:55: [Some of the numbers have already been fixed.]
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