Which ratio is primarily used to check assessment consistency across properties?

The Coefficient of Dispersion is the correct choice for assessing consistency across properties. It is a statistical measure that provides insights into how uniformly properties are valued relative to their market values. Specifically, it assesses the level of variability in assessment ratios across a set of properties, indicating how closely assessments conform to the market.

This ratio functions effectively in identifying disparities in property assessments, which can indicate inequities in the assessment process. A lower Coefficient of Dispersion signifies a more uniform assessment, while a higher value suggests inconsistency. Therefore, this ratio is particularly valuable for appraisers and assessors looking to ensure equity in property tax assessments.

Other ratios, while useful for various assessments, do not focus primarily on consistency in the same manner. The Mean Assessment Ratio provides an average assessment but does not offer insights into the distribution of those assessments. The Aggregate Ratio sums individual assessment ratios, which may mask inconsistencies among properties. The Price Related Differential assesses the relationship between assessed values and sale prices but does not directly measure the consistency of assessments among a group of properties. Thus, the Coefficient of Dispersion stands out as the primary tool for evaluating the assessment consistency across properties.