For the second group of areas (which included 10 areas with valid data), the EPAâs analysis calculated an average across the areas of maximum monitor annual mean concentrations, averaged over 3 years, of 14.8 mg/ m 3 compared to an average of composite monitor concentrations of 14.2 mg/m 3 (Frank, 2012a, Table 3).
Updated February 24, 2017. The mean or average birth weight in the United States is about 3,389g or 7 lb, 7.5 oz. However, any birth weight of a term newborn between 5 lbs, 8 oz and 8 lbs, 13 oz is considered to be normal. Baby Birth Weight Statistics.
As of February 2015, the average weight of a 19-year-old male in America is 152 pounds, while the average female weighs 126 pounds. However, once a person reaches adulthood, an ideal average weight is determined more by height and body type than by age.