stanine

sta·nine

noun \ˈstā-ˌnīn\

Definition of STANINE

: any of the nine classes into which a set of normalized standard scores arranged according to rank in educational testing are divided, which include the bottom 4 percent and the top 4 percent of the scores in the first and ninth classes and the middle 20 percent in the fifth, and which have a standard deviation of 2 and a mean of 5

Origin of STANINE

standard (score) + nine

First Known Use: 1944