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I am working on a research project where I have several questions from a survey data that measures the same underlying quantity (my dv), possibly each with some measurement error. I was thinking about using PCA method to extract the most relevant component. My initial analysis turns out to give what I wanted, but I'm not sure if this is a generally accepted practice in statistics. Could someone let me know if there is any problem with this, and if there is any publication that has taken a similar approach?

Thanks a lot

Jacob Yerger
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  • MAybe this will help http://stats.stackexchange.com/questions/33053/incorporating-a-response-variable-in-principal-component-analysis – niandra82 Jul 27 '14 at 13:56
  • Answer to the title question is **yes**: you can use whatever you want as your dependent variable. – amoeba Dec 17 '14 at 22:08

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