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读者熟知,单变量计量资料的差异显著性检验,一般用 t 检验法,通常有两类问题:1.检验一样本是否来自某已知总体。2.检验两样本是否来自同一总体,即两样本均数有否显著差异。
Readers are familiar with the significance of the univariate measurement data, usually using the t-test. There are usually two types of problems: 1. Check whether the sample is from a known population. 2. Test whether the two samples are from the same population, ie if there is a significant difference between the two sample means.