Algorithm Appreciation

Rather than median sales price, the S&P CoreLogic Case-Shiller Index uses a special mathematical formula based on the past few months of sales data to plot the course of home appreciation over time. As you can see from this graph, prices in the Bay Area have outpaced national trends since we emerged from the Great Recession.

Geek's Number Talk: As interest rates rise, the market falls.

With the Fed about to increase interest rates another three-quarters of a point, Wall Street is reacting, and not in a good way. The Dow Jones lost 876 points Monday — or nearly 3 percent — Nasdaq fell 4.7%, and the S&P 500 lost nearly 4%. Overall, the market is down 20% since January. Want to get more numbers? Have a listen to the PBS News Hour.