Former Nunda Township Supervisor John Heisler Explains “Coefficient of Dispersion”

Reader Susan Handelsman found this explanation on Nunda Township web site.  Assessor Mark Dzemske informs me it was written in 2001 by former Supervisor John Heisler. This is good explanation from Nunda Township Assessment website: Coefficient of Dispersion . . … Continue reading

Assessment Quality in McHenry County After the Last Township Election

Every so often, it seems useful to share measurements of assessment quality among McHenry County Townships. These are basically measures of the work of township assessors, although the quality of their work can be increased or decreased by changes made … Continue reading

County Releases Assessment Quality Statistics

Assessors use something called a “Coefficient of Dispersion” to measure the quality of assessments. It’s something like the margin of error used in political polls. The McHenry County Supervisor of Assessments has provided the following data from 2015.  This is … Continue reading

A Benefit of Consolidating Township Governments

Back in the 1970’s, Algonquin Township Assessor Forrest Hare computerized his office, probably the first to do so in the State of Illinois. He also took an interest in how assessment could be made more accurate. Hare looked at measures … Continue reading