Originally Posted by

**ragnar** I'm not sure what binning is. But yeah, the last percentage should be 45, my bad. Anyway, supposedly the reason for choosing 7 is just common sense that the amount of 8- and 9- and 10-person households are very very small in comparison to the rest, and those which are 10+ are probably negligible, so 7 is an informed guess.

Anyway, the thing I'm most interested in is the precise interpretation of the numbers being used. We can, if desired for simplicity, say that there are only 1-, 2-, 3-, and 4-person households and do the numbers in the obvious way, but I want to check that the resulting weighted average represents something like the typical household rather than the household of the typical person.