Thanks for the reply and quoting the text. So, are population-weighted centroids (described in the paper) similar to mean centers of populations (available at http://www.census.gov/geo/reference/centersofpop.html)? Another question: Can population-weighted centroids for 'block groups' be calculated from the population estimates of 'block groups'? OR Calculations of population-weighted centroids for 'block groups' need population estimates of 'BLOCKS' instead of 'BLOCK GROUPS'?
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