There were 153,791 households, out of which 44,762 (29.1%) had children under the age of 18 living in them, 50,797 (33.0%) were marriage living together, 24,122 (15.7%) had a female householder with no husband present, 8,799 (5.7%) had a male householder with no wife present.  There were 11,289 (7.3%) POSSLQ, and 3,442 (2.2%) same-sex partnerships. 52,103 households (33.9%) were made up of individuals and 13,778 (9.0%) had someone living alone who was 65 years of age or older. The average household size was 2.49.  There were 83,718 family (U.S. Census) (54.4% of all households); the average family size was 3.27.

Based on the above article, answer a question. How many people larger was the average family size than household size?
0.78