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 A| abscissa | 横坐标 |  | absence rate | 缺勤率 |  | absolute number | 绝对数 |  | absolute value | 绝对值 |  | accident error | 偶然误差 |  | accumulated frequency | 累积频数 |  | alternative hypothesis | 备择假设 |  | analysis of data | 分析资料 |  | analysis of variance(ANOVA) | 方差分析 |  | arith-log paper | 算术对数纸 |  | arithmetic mean | 算术均数 |  | assumed mean | 假定均数 |  | arithmetic weighted mean | 加权算术均数 |  | asymmetry coefficient | 偏度系数 |  | average | 平均数 |  | average deviation | 平均差 | 
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