LC – I don’t know how these surveys work, but I would assume that an adult single (certainly if he/she is living on his/her own, and possibly even if he/she is not) would count as a family even though he/she doesn’t have children. This would decrease the average number of children calculated in such a survey, and make it appear to be less than it would be if you are not including singles (and I would guess that Joseph was not counting singles).
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