英语翻译

问题描述:

英语翻译
英语翻译提问:The within-laboratory coefficient of variation was found to be 9% with 22df and the between-laboratories coefficient of variation 35% with 7df.句中9% with

df=degree of freedom*度(degree of freedom,df)在数学中能够*取值的变量个数,如有3个变量x、y、z,但x+y+z=18,因此其*度等于2.在统计学中,*度指的是计算某一统计量时,取值不受限制的变量个数.通常df=n-k...