Displaying 3 results from an estimated 3 matches for "cor2pcor".
2005 Dec 07
1
KMO sampling adequacy and SPSS -- partial solution
...statistic.
## Formula derived from Hutcheson et al, 1999,
## "The multivariate social scientist," page 224, ISBN 0761952012
## see <http://www2.chass.ncsu.edu/garson/pa765/hutcheson.htm>
###
cor.sq = cor(df)^2
cor.sumsq = (sum(cor.sq)-dim(cor.sq)[1])/2
library(corpcor)
pcor.sq = cor2pcor(cor(df))^2
pcor.sumsq = (sum(pcor.sq)-dim(pcor.sq)[1])/2
kmo = sus.cor.ss/(sus.cor.ss+sus.pcor.ss)
return(kmo)
}
Also, for those trying to reproduce the SPSS factor analysis output,
(-1 * cor2pcor(cor(yourDataFrame))) will produce the "anti-image
correlation" matrix. Unfortunatel...
2008 Nov 18
1
Statistical querry on Partial correlation test
Hi R users,
I want to calculate the partial correlation (first or second order) and their corresponding significance test (p-value).
I used
> library(corpcor)
and "cor2pcor" function to calculate partial correlation but could not calculate "p-value".
If some one knows the R package or function to calculate corresponding "p-value", It will be great help.
Thanks
Sincerely,
Ram Kumar Basnet
Graduate Student
Wageningen University,
The Netherlan...
2009 Sep 30
1
How to calculate KMO?
..."The multivariate social scientist," page 224, ISBN 0761952012
## see <http://www2.chass.ncsu.edu/garson/pa765/hutcheson.htm><http://www2.chass.ncsu.edu/garson/pa765/hutcheson.htm%3E>
###
cor.sq = cor(df)^2
cor.sumsq = (sum(cor.sq)-dim(cor.sq)[1])/2
library(corpcor)
pcor.sq = cor2pcor(cor(df))^2
pcor.sumsq = (sum(pcor.sq)-dim(pcor.sq)[1])/2
kmo = sus.cor.ss/(sus.cor.ss+sus.pcor.ss)
return(kmo)
}
What is this object "*sus.cor.ss*"?I get errors
> sus.cor.ss
Error: object "sus.cor.ss" not found
Thanks in advance
Moumita
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