How the National Mortgage Rate is Calculated
Updated Oct. 9, 2013
How the national average is calculated. Freddie Mac's Primary Mortgage Market Survey(R) (PMMS(R)) surveys lenders each week on the rates and points for their most popular 30-year fixed-rate, 15-year fixed-rate, 5/1 hybrid amortizing adjustable-rate, and 1-year amortizing adjustable-rate...