The core rate of inflation excludes 2 volatile items that were extra volatile in 2008; energy is one, this is the other
[DOC] [TLE] Education | What is core inflation, and why do economists use it ... [PAR] One common way economists use inflation data is by looking at core inflation, ... 
Price Index or PCEPI, or the Gross Domestic Product Deflator) that excludes the 
more ... Why are food and energy prices typically more volatile than other prices?