中国的城市贫困:社会救助及其效应 获得低保家庭(对照组)的均值, 第二列为控制组的均值。最后一列则是获得低保的家庭由于低保转移支付所 产生的效应(A verage Treatment Effects,ATT ) 。其中, T ATT = E(T| D=1) = E[Y 1 |D=1]- E[Y 0 |D=
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The treatment appeared to have lasting effects: 24 weeks after undergoing the procedure, the average pain score was just 1.7 points.
该疗法似乎有持续效果:在接受该治疗操作的24周后,平均疼痛评分只有1.7分。
The effects of cutting type, hormone treatment and cutting position on rooting ratio, average number of taproot and average length of root system were studied by orthogonal experiment.
通过正交试验,研究了穗条类型、生根试剂处理穗条、穗条插口修剪位置,在大叶栎扦插育苗过程中对其插穗生根率,平均主根数量及平均根系长的影响。
The random effects estimate and its confidence interval address the question 'what is the average treatment effect?
随机效应估计和它的可信区间会提出这样一个问题,“平均效应是什么?”
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