出生性别比标准的探讨  

The research on the standard of sex ratio at birth

作　　者：干建平[1] 徐春[1] 

机构地区：[1]黄冈师范学院生物系,湖北黄州438000

出　　处：《黄冈师范学院学报》2000年第3期40-42,共3页Journal of Huanggang Normal University

摘　　要：人的出生性别比的正常范围 1 0 2～ 1 0 7是建立在大样本上的 ,而实际样本都存在抽样误差 .该文用 2 检验方法导出出生性别比的 0 .95置信度的范围界限与样本量的关系 。The normal range of sex ratio at birth (102～107) is based on large samples.Because of sampling errors in practical samples,  2 test is utilized to deduce the relationship between the range limits of sex ratio at birth at 0.95 confidence interval and the sizes of samples, and the deviate degree of sex ratio at birth is analysed in China′s population.

关 键 词：出生性别比 X^2检验 置信度 抽样误差 中国 人口 

分 类 号：Q987[生物学—遗传学]