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科学试验中测定两个以上样本之间的差异显著性,用变量分析的方法。一、变量分析的基本原理变量(或方差)是标准差的平方,就是V=S~2,变量与标准差的意义完全相同,都是说明一个集团内变数的变异情况。它们的区别是计算变量省去了开方,简化了计算过程。变量的计算公式如下: 在农业科学试验中,大多数是小样本,因此都用小样本变量的计算公式。
In scientific experiments, the significance of the difference between two or more samples was determined by the method of variable analysis. First, the basic principle of variable analysis Variable (or variance) is the square of the standard deviation, is V = S ~ 2, the meaning of variables and standard deviations are exactly the same, are to illustrate the variation of a group of variables. The difference between them is that the variables are eliminated and the calculation is simplified. The formula for a variable is as follows: In agricultural science experiments, most are small samples, and therefore all use the formula for small sample variables.