I hope this isn't too simple to bother you with, but this calculation is at the center of a dispute at work and I want to make sure I'm on solid ground here.
To begin with, we know that the average household size of a particular jurisdiction in 2010 was 3.26 members per household.
However, we also have the following breakdown of households by size:
1,280 one-person households
3,236 two-person households
3,770 three-person households
3,200 four-person households
2,106 five-person households
2,443 households with six members or more.
Based on these figures, and assuming for the sake of argument that there are no households with more than six members, I calculate a weighted average household size of around 3.56. Furthermore, given that there probably are households with more than six members, I would say that the average could not possibly be lower than 3.56--certainly not as low as 3.26.
Am I right about this?