摘要
从多种角度加深理解标准差的含义,有助于应用。用不同的代号表示贝塞尔公式和标准差的定义式不够妥当。
Further understanding meanings of standard error in various ways is useful to application.And it is unsuitable to use different letters to indicate the Bessel formula and the definition formula of standard error.
关键词
随机误差
标准差
统计均值
贝塞尔公式
Random Error
Standard Error
Statistical Mean
Bessel Formula
