Hello, not understanding the output of prcomp, I reduce the number of
components and the output continues to show cumulative 100% of the
variance explained, which can't be the case dropping from 8 components
to 3.
How do i get the output in terms of the cumulative % of the total
variance, so when i go from total solution of 8 (8 variables in the data
set), to a reduced number of components, i can evaluate % of variance
explained, or am I missing something??
8 variables in the data set
> princ = prcomp(df[,-1],rotate="varimax",scale=TRUE)
> summary(princ)
Importance of components:
PC1 PC2 PC3 PC4 PC5 PC6 PC7 PC8
Standard deviation 1.381 1.247 1.211 0.994 0.927 0.764 0.6708 0.4366
Proportion of Variance 0.238 0.194 0.183 0.124 0.107 0.073 0.0562 0.0238
Cumulative Proportion 0.238 0.433 0.616 0.740 0.847 0.920 0.9762 *1.0000*
> princ = prcomp(df[,-1],rotate="varimax",scale=TRUE,tol=.75)
> summary(princ)
Importance of components:
PC1 PC2 PC3
Standard deviation 1.381 1.247 1.211
Proportion of Variance 0.387 0.316 0.297
Cumulative Proportion 0.387 0.703 *1.000*
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