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| Warranty deed - A deed conveying to the grantee title to the property free and clear of all encumbrances except those stated in the deed itself. |
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| Wasting asset - A property or other thing of value whose value diminishes with the passage of time. For example, buildings are a wasting asset, but land and gold, traditionally, are not. |
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| Weighted coefficient of dispersion - The coefficient of dispersion when the absolute differences between individual assessment ratios and the measure of central tendency (for example, median ratio) are weighted on the basis of sale price. |
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| Weighted coefficient of variation - The coefficient of variation when the squared differences between individual assessment ratios and the arithmetic mean ratio are weighed on the basis of sale price. |
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| Weighed mean; weighed average - An average in which the observations are weighted based on some criterion. In ratio studies, the weighted mean is calculated by weighting the ratios based on their sales prices. A shortcut method is to sum the appraisals or assessments, sum the sales prices, and divided the first result by the second. |
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