Low contribution and high cos2

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Mahmood Naderan

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Mar 21, 2021, 11:49:16 AMMar 21
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Hi
I used the FAMD function from Factomier and as you can see in the graph of quantitative variables (https://i.stack.imgur.com/Kbq1j.png) V2 has a low contribution percentage. On the other hand the cos2 value of V2 is rather large. So, I wonder how that is possible? I mean what can be understood from V2? Is it good in PC1-PC2 chart?

Regards,
Mahmood



Francois Husson

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Mar 26, 2021, 11:33:46 AMMar 26
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Hi
The variable V2 is well projected on the plane. And the cos² is similar to the cos² of the other variables. All the continuous variables contributes approximately in a same way in your analysis (from 14% to 18%).
FH
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