猬儿
文章返修审稿人意见:You may also add the estimation of the power analysis including Beta value for your selected sample size in the case of "paired t-test and Wilcoxon signed rank test" here. Note: When used SPSS Software for mean differences that you earlier evaluated, one can simply see to estimate the total p-value percentage from p-value number ratio which can usually estimate 70-99% power analysis based on total P-Value, and beta is the reversed percentage.
想求助一下大家这个t检验和秩和的β值是什么呀?怎么算呢?
Dr_劉医生
用spss分析的时候要分开勾选,连续的正态分布变量默认用的是t检验,分类变量就需要wilcoxon秩和检验和β值啦
猬儿![]()
请问具体怎么操作呢?SPSS找不到哪里有选β…
土井挞克树
t检验,贝塔系数的标准差求法:βa=Cov(Ra,Rm)/σ²m,ρam为相关系数;σa为标准差;σm为标准差。
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