Re: Principal Component Analysis in Different Measurement Units

Posted by Hans Chen on
URL: http://spssx-discussion.165.s1.nabble.com/Re-Principal-Component-Analysis-in-Different-Measurement-Units-tp5726162.html

My friend performed Principal Component Analysis using SPSS 13.0 and got different results using two different data. The first data set is the raw data: 85(proportion of urban population), $80354(GDP per capita); the second data set is the adjusted data: 0.85(the proportion of the urban population), $80.354 thousand (GDP per capita). Actually, the second data set is different from the first data set only in measurement units. For the first data, my friend got four main components, for the second data set, he got five components. Could you advise what might be the reason for the difference?

Thanks for your help.

Han Chen