Which statistical measures would a County Tax Board review to determine if a revaluation is necessary?

The County Tax Board focuses on factors that indicate whether properties are assessed accurately in relation to their market values. Among the statistical measures that are critical in this assessment, coefficients of deviation play a significant role. This measure examines the uniformity of assessments across properties by indicating how far individual assessments deviate from the average assessment ratio. A high coefficient indicates significant discrepancies, suggesting that a revaluation may be necessary to restore fairness and equity in assessments.

Additionally, the number of sales is used to gauge market activity and ensure that the current assessments reflect actual market conditions. A low number of recent sales may indicate stagnant property values, which could also point toward the need for a revaluation if the assessed values no longer correlate with market trends.

While the other options present relevant information, they do not capture the primary statistical indicators that directly assess the equity of property valuations as effectively as coefficients of deviation and the volume of sales do.