I’ve been looking at Coefficients of Dispersion for pretty much sixty years.
This is a measure of the uniformity of assessments in a given jurisdiction a member of the Illinois Department of Revenue pointed me to in the late 1960’s when I decided to look at assessment disparities while I was County Treasurer.
My stimulation was a woman who came into to pay her taxes complaining a house build before hers across the valley was assessed as an empty lot, while hers was assessed at 60% of what she had paid for it…