Because the SAT scores for incoming class of students as significantly and severely skewed – thus violating the assumption of normality – you dichotomized the students into two SAT groups coded zero and one.  Students that scores below the median score of 1000 on the SAT were given a code of 0, and classified as the Low SAT students.   Students that scored 1000, or above,  on the SAT were given a code of 1, and classified as the High SAT students.   

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