# Tagged Questions

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### Factor Analysis: calculate maximum likelihood factor loadings from only the correlation (R) matrix and/or covariance (S) matrix?

Does anybody know how to calculate the maximum likelihood factor loadings from only the correlation (R) matrix and/or covariance (S) matrix in Factor Analysis "by hand" (i.e., by Excel)? Or, even ...
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### Finding latent variables in 7 dichotomous variables

I have read other posts on conducting Factor analysis (FA) with dichotomous variables and although it appears clear that FA done in the default way is not appropriate, I am still unclear about a few ...
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### Does SPSS give factor scores for mean subtracted variables?

From the Johnson's book, I can see the orthogonal factor model is as follows: $X-\mu=LF+\epsilon$ So if I use SPSS for extracting factor scores from a factor analysis of several variables, then am I ...
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### How to estimate the out crosses rate in crops?

How to estimate the out crosses rate in crops? in have experiment included; main plot (1- seeds from open field 2- seeds from free pollinators cage 3-seeds from pollinator cage), sub plot (5 ...
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### Making sense of a factor analysis application

I'm a biochem guy so the stats in this paper are giving me a real hard time. Kliman, RM, Irving, N, and Santiago, M. Selection Conflicts, Gene Expression, and Codon Usage Trends in Yeast. J Mol ...
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### What is the relationship between independent component analysis and factor analysis?

I am new to Independent Component Analysis (ICA) and have just a rudimentary understanding of the the method. It seems to me that ICA is similar to Factor Analysis (FA) with one exception: ICA assumes ...
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### Which statistical test should I use when there are multiple latent predictors and multiple latent outcomes?

I am doing my research on Personality (the big five factors) and if personality can predict commitment to an organization. However, commitment is composed of three dimensions. What is the best ...
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### Should I remove a variable from a PCA analysis if it is the only variable to load on a component?

I have four continuous variables drawn from secondary data of companies. The combination of these four variable represent my dependent variable. These four variables are real values. They are just ...
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### Problem with Developing a Model for an Exploratory Study (PCA EFA)

*Background:* I am doing an academic study that is more exploratory in nature (my advisor did not want me to develop any hypothesis). So I read books and conducted interviews to try and gather a large ...
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### How to perform factor and canonical correlation analysis on correlation matrices in R?

I know how to do factor and canonical correlation analysis on raw data in R. But sometimes we only having correlation matrices for the data. I'd like to know any R functions which can take correlation ...