stanine

Main Entry:  stanine
Part of Speech:  n
Definition:  a nine-point scale used for normalized test scores, with 1-3 below average, 4-6 average, and 7-9 above average; one of the steps in a nine-point scale of standard scores
Etymology:  abbreviation of standard nine
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Word Origin & History

stanine
"nine-point scale for test scores," introduced by the U.S. Air Force in 1942, from sta(ndard) + nine.
Online Etymology Dictionary, © 2010 Douglas Harper
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