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Census Block Groups

Question asked by sapell on Jul 3, 2013
Latest reply on Jul 5, 2013 by sapell
I have data from 1980 2000, and 2010 from census bureau by block groups and i have geocoded 100 addresses. I am trying to  extract  data from a buffer zone of 0.5 miles radius around each point. There are about 100 points in different parts of the country.
1. How does one calculate the average of  the median income or median housing value within o.5 miles  radius of  a point/address that might cover as many as four block  groups.
   We have explored using the average weighted join but found that mathematically its not very solid approach.  someone suggested using centroid to calculate the averages but i am clueless as to which tool would work best

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