一、点估计和区间估计 (point estimation and interval estimation) 1.点估计 点估计：当总体参数不清楚时，用一个特定值（一 般用样本统计量）对其进行估计，称为点估计。
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结果在已知实验灵敏度、特异度条件下，导出并验证了由阳性检出率计算患病率的点估计和区间估计方法。
Results Under the condition of positive detective rate, sensitivity and specificity known, the equations of prevalence were deduced.
本文针对小子样可靠性统计试验的特点，指出经典可靠性点估计和极大似然区间估计的不足。
For the case of the reliability statistical test which is a small sample, this paper presents disadvantages of point and interval estimation of classical reliability.
运用区间估计方法代替传统的点估计方法，导出结构混凝土强度的置信上限、下限和置信区间。
Meanwhile, by using interval estimation instead of the conventional point estimation, the lower and upper confidence limits, the confidence intervals of structure concrete strength are derived.
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