Oh Jeez, great catch Jim! What a joke. This data is pretty important right now, so you’d think at least DataQuick would have caught the mistake, it’s their numbers after all…
Alex’s example still shows us how it could happen that the overall median could rise, while the constituents could fall, but when you think about it, for that to happen there would have to be a MASSIVE shift in the mix. This tells me that the shift in the mix, while no doubt is happening, is more subtle (i.e. slower moving). The fact that North County Coastal median was up 4.5% and volume constant, while South County median was down -4.7% and volume WAY down (174 vs. 262) is really where the change in mix is showing up in the data.
