two normal population

基本解释

In this paper, we calculate average deviations and give two kinds of estimate of standard deviation for the normal population.
求出了正态分布的平均偏差，并由此给出了正态总体标准差的两种新估计。
Results show two-week prevalence and chronic desease prevalence are 22.92% and 31. 61 %. They are higher than those of the normal population.
结果显示肢体残疾人两周患病率为22．92％，慢性病患病率为31．61％，均高于一般人群，其患病率受到多种因素的影响。
Methods The myoglobin, troponin test values at several time points of 37 patients were compared with those of the normal population, and the positive rate of the two groups were analyzed.
方法采用化学发光法对肌红蛋白、肌钙蛋白进行测定并与健康人群比较各时点检测值，分析两者的阳性率。