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"Factor Analysis vs PCA?"

NedPointsmanNedPointsman Member Posts: 2 Contributor I
edited June 2019 in Help
I'm fairly new to this whole thing and I'm trying to get my head around component analysis.

Given a very basic data set of;

mode/displacement/cylinders/mpg

DB9 5.9 12.0 15.0
DBS 5.9 12.0 14.0
A3 2.0 4.0 24.0
A3 QUATTRO 2.0 4.0 24.0
A4 2.0 4.0 26.0
A6 3.2 6.0 22.0
Q5 3.2 6.0 20.0
A4 QUATTRO 2.0 4.0 23.0
A5 Cabriolet 2.0 4.0 26.0
Brooklands 6.8 8.0 11.0
...

What I want to know is the overall correlation between mpg and displacement. At first glance PCA appeared to be what I required, but looking into it, it seems using R and a straightforward factor analysis is the way to go?

Thanks in advance.
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