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jjjj6666 发表于 2014-3-12 03:15 pca is based on standardized data. My understanding (which could be wrong) is it is better to take ...
jjjj6666 发表于 2014-3-12 10:12 yes. But I am not sure what do you mean: 如何检验去对后的数据更贴近原本的数据水平呢
jjjj6666 发表于 2014-3-18 21:12 there are quite a few things can be done to test normality, e.g., histogram, qq plot, swilk or sfran ...
I10714024 发表于 2014-3-19 18:28 Thanks a lot!
mmmmx996 发表于 2020-6-8 22:21 我也在做主成分分析 请问楼主标准化的命令是啥 计量小白求回复~~~
x948936710 发表于 2020-10-30 10:05 批量处理:center var1 ... , prefix(z_) standardize prefix(z_)表示变量名前面加上前缀z_