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"What is the definition of household?"
I used the number in the column labeled "households" in the US Census Bureau website. :-)
I agree with you, Rekna, that estimates can often vary. That's why I did the math myself. The fascinating thing is that my calculation is astonishingly close, within a few percent of the public statement, as long as you choose parameters suitable to your end goal. It does vary by factors of several if you choose more typical parameters.
I have no idea where they came up with the parameters that they used. Without knowing who did it, there's no knowing what or why they chose. It would be nice if we coukd find the source and question them, but that doesn't seem likely. The best we can do is try and reproduce their conclusion with credible, publicly available information. That's one of the problems with unsupported claims that get distributed across the net. They take on a life and truth of their own because they're diffuclt to counter.
What would you use to make the calculations? Or do you even care to?
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