What is a definition of year-over-year (y-o-y) from the heat maps?
Hi Matt- “y-o-y” represents the percent change in value from the prior year period to the current year period. For example, on the Phoenix Heat Map below, the median sales price for North Phoenix from April – June 2008 was $225,000. http://www.trulia.com/home_prices/Arizona/Phoenix-heat_map/ This is the median sales price for transactions that occurred during that 90 day time period. The y-o-y change is listed as 0.2%. This means that the median sales price increased 0.2% from the prior year period (April – June 2007) to the current year period (April – June 2008). If you look at our North Phoenix Stats & Trends page, and look the Median Sales Price for North Phoenix, you can see the median sales price for the prior year period compared to the current year period. http://www.trulia.
