What is the purpose of calculating the average deviation in assessments?

Calculating the average deviation in assessments serves the purpose of measuring the accuracy of assessment ratios. This method provides insight into how closely the assessed values of properties align with their market values or sale prices. By examining the deviations of each assessment from the average or expected assessment level, assessors can evaluate whether the property assessments are equitable and accurate across a jurisdiction.

An accurate assessment is crucial for ensuring fairness in property taxation, as it helps identify whether properties are being assessed too high or too low in relation to their market value. The average deviation provides a statistical means to quantify this accuracy and can highlight inconsistencies that may need to be addressed in the assessment process.