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deviation value (usu. scaled to mean of 50, standard deviation of 10, and often used for academic grades); deviation; T-score; standard score
息子の偏差値が上がった。
My son's deviation score went up.
この大学の偏差値は年々高くなっている。
The deviation score for this university rises year by year.
偏差値だけで将来の進路を決めるのは危険だ。
Deciding your future career only by deviation score is risky.