spss中如何对两样本进行平均数差异检验

2024-12-20 15:01:12
推荐回答(4个)
回答1:

1、spss中导入相关数据以后,直接按照Analyze→Compare Means→Paired-Samples T Test的顺序进行点击。

2、下一步弹出新的对话框,需要根据实际情况来选择相关的参数。

3、这个时候如果没问题,就确定OK。

4、这样一来会得到对应的结果,即可对两样本进行平均数差异检验了。

回答2:

(1)两个样本平均数差异的显著性检验,首先要对两个相应的总体平均数之间提出没有差异的零假设,然后以两个样本平均数差的抽样分布为理论依据来考察两个样本平均数之差是否来自于两个总体平均数之差为零的总体。
(2)P值越小,越有理由说明总体平均数存在差异,并不是说明差异越大。
操作步骤:Analyze→Compare Means→点击Independent-Samples T Test,进入该对话框→将要检验的数据变量选入到Test Variable(s)→将要检验资料的分类变量选至Grouping Variable,此时变量名后出现〔??〕,再点击Define Groups,定义分类变量(必须与数据文件中录入的分类变量值一致)→点击Options按钮,进入Options子对话框,Confidence Interval选项系统默95,也可根据需要改为99,确定置信水平后返回上一对话框→点击OK键运行。

回答3:

应该是对原始数据进行检验,而不是直接对平均数进行检验。检验方法视具体情况而定。

回答4:

就对这12个数进行检验?独立样本t检验就okay了

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