This chart shows us something our HS math teachers told us about and most of us promptly forgot: The Median is not The Mean

The fact that the Case Shiller Index (red below) differs from the blue line below (a rare occurrence) shows that upper-end homes are not selling right now.
But the fact that it is rising shows that homes generally are still rising.
(Good news for homeowners, bad news for their children, their grandchildren and the near-term future of the American economy etc.)