Re: Can I use rank data to do PCA?

2000-05-28 Thread Rich Ulrich
On 28 May 2000 17:25:18 GMT, [EMAIL PROTECTED] (Wen-Feng Hsiao) wrote: Dear Ulrich, Thanks for your reply. I now have more confidence in analyzing my data with PCA. However, you mentioned that 43 subjects are too thin to obtain a stable/converge result. This incurs me another question --

Can I use rank data to do PCA?

2000-05-25 Thread Wen-Feng Hsiao
Dear listers, I have 43 subjects to rank 11 stimuli. To obtain the underlying variables, principal components, I conduct a PCA (Principal Component Analysis) to the obtained ranked-data. However, a friend of mine told me that using ranking data to do a PCA is quite dangerous, since the scores