Descriptive statistics of tests for mathematics achievement and spelling abilities by group of participants.
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aRaw scores are reported here.bCalculation corresponds to participants’ total score at the calculation test (i.e., addition, subtraction, multiplication).cMathematics Achievement Indices were computed by averaging the participants’ results at the WRAT4-Math test, the addition, the subtraction and the multiplication sections of the calculation test.
创建时间：
2015-12-02
