Are individual sales ratios also used to reveal the degree of assessment uniformity?

Yes, assessment uniformity among and between classes of property is determined by comparing the measures of central tendency that were derived from the individual sales ratios. 

Several systematic techniques can be applied as needed to discern any biases that are revealed to the value of properties. Some applications measure the average percentage deviation of each sales ratio with reference to the assessment level, while others measure variability, regressivity and progressivity.

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1. What is considered an accurate assessment?
2. What method is used to measure the assessor’s appraisal performance?
3. How is a sales ratio calculated?
4. Does one sale tell us something about the assessment level of properties?
5. Are individual sales ratios also used to reveal the degree of assessment uniformity?