A scaled score carries mathematical properties that allow these scores to be examined in a variety of ways. Generally, it can be said that the scaled scores have a wide range and are equally intervaled. There is the same distance from one scaled score unit to the next across the entire scale. However, this does not mean that there is an equal scaled score interval between two raw score units. A test in which performance is measured by the number of tasks performed in a given time.
Examples are tests of typing speed and reading speed.
Also, a test scored for accuracy where the test taker works under time pressure. A test characteristic, dictated by the test's time limits, that results in a test taker's score being dependent on the rate at which work is performed as well as the correctness of the responses. The term is not used to describe tests of speed. Speededness is often an undesirable characteristic. A type of derived score such that the distribution of these scores for a specified population has convenient, known values for the mean and standard deviation.