实验设计中估计样本含量,是指在所选择的Ⅰ型和Ⅱ型误差水准前提下,按设定的指标间差异推算出足以拒绝 H_0之最小样本含量而言。也是按一定的检验水准能分辨指标间是否相异的最小观察例数。作这样的估计,有两个条件必须考虑:①水准和β水准;②指标间差异。基于此,笔者提出三点认识。 The estimated sample content in the experimental design refers to the fact that, based on the error level of Type I and Type II selected, the minimum sample content sufficient to reject H_0 is deduced from the difference between the set indicators. It is also the minimum number of observations that can distinguish whether the indicators differ according to a certain level of inspection. For such an estimate, there are two conditions that must be considered: 1 level and β level; 2 difference between indicators. Based on this, the author proposes three points of understanding.