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To my understanding, the way a Sales Ratio Study works is this: the selling-price for all recently-sold properties, and their property card data, are used to create a computer model. The end result is a model that predicts the “sold” price (which is already known) for each of those properties. The predicted price must not exceed the actual sold price for any of those properties. The model is statistically validated using IAAO rules, and (presumably) signed-off on by the city. A report should have been created on this. The model is then applied to all other properties, giving us our assessments. There is nothing in the model that would tell us anything relative to the prior assessment or so-called “demand” effect on high-low value properties. I am told Providence and East Providence had a “reval” at the same time as Warwick. Cranston was a year or two earlier.