Quote:
Originally Posted by memph
I have to say it's hard to believe Miami's weighted density would be so close to the gross/overall density. Did your total population add up to 399,000? What was your methodology?
There's basically two ways of calculating the weighted density that I can think of.
1. Take the population of each census tract and divide by the population of the city. Multiply this number by the census tract's density to get the "weight". Do this for all the city's census tracts and add up all the "weights".
2. Take the population of each census tract and multiply by the density to get the "weight". Add up all the weights and divide the sum of all the weights by Miami's total population.
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Using that method (I did #2) I got ~15,900.
The method I had done to get my number before was simply to get the actual density number at which 50% of the population lives at or above (select the tracts above this density, what percentage of the population is this, play around with a few numbers until you get to 50%).