Abstraction Method

The number of years that have elapsed since the completed construction of an structure; also referred to as historical age or chronological age.

A written form of an affirmed or sworn statement.

See land ratio method.

The tendency of data to cluster around some typical or central value, such as the mean, median, or mode.

The average deviation of a group of numbers from the median expressed as a percentage of the median. In ratio studies, its the average percentage deviation from the median ratio.

A judgment of the depreciation of an improvement. Note: This is a difficult area of comparison because although the condition of the subject is known, it is difficult to know the condition of the comparable. Differences in condition may justify variances in selling prices of similar properties.

Computer Assisted Mass Appraisal (CAMA)-A system of appraising property, usually only certain types of real property, that incorporates computer-supported statistical analyses such as multiple regression analysis and adaptive estimation procedure to assist the appraiser in estimating value. Additionally: A system for assessing real and personal pro [..]

Sharing a property boundary; adjacent.

Charts, tables, factors, curves, equations, and the like intended to help estimate the cost of replacing a structure from databasing of other factors, such as its quality class and number of square feet.