The Chapman forecast uses both national and local data to reach their conclusion. Some of the things the forecasters look for are:
- Are the same trends being seen both nationally and locally?
- What is the time lag between national and local economic events and cycles?
- Has history shown a strong tie between local and national events or do the two sometimes diverge? Is it possible for the nation to be in a recession while Orange County stays level?
- What doesn't make sense? What other data is needed to see a trend, or do we just need to wait it out to see the direction it's moving in?
GDP (Gross Domestic Product)
GDP was measured using a quarter to quarter percent change (also called real GDP growth.) You do this to see if the number is increasing, decreasing or staying the same. Real GDP growth hit zero (0!) in 1st quarter of 2007, went up, flattened out, and hit zero again before the 1st quarter of 2008. Real GDP growth spiked again in the 2nd quarter of 2008, then went below zero (negative). It's looking like real GDP growth hit bottom in the 4th quarter of 2008 and is trending slowly upward. Real GDP growth became positive around March 2009 and is now around about 1.2% to 1.7% percent, quarter to quarter. This is a good sign that the pieces of the GDP (see Pt 1 of this series) are starting to move in one, positive direction.
Household Income
Household income was measured as year to year % change. Change in household income was flat from January 2007 to January 2008, then started to decline. In December 2008,
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