【摘要】 给出了一种混凝土验收批强度标准差的无偏估计方法。该方法能充分利用以前和当前的全部概率信息得到高置信度的强度标准差估计量,与传统方法比较更接近于母体真值。更多还原

【Abstract】 A new method for unbiased estimating standard deviation of strength of concrete of inspected lot is proposed in this paper. Utilizing sufficiently former and current probability information , high confidence of standard deviation of strength can be gained by using the method. The estimation gained is closer to real values of population than using traditional method.更多还原