What is the difference between principal component analysis and factor analysis?
Let’s learn what is the difference between principal component analysis and factor analysis. The most accurate or helpful solution is served by Cross Validated.
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The psych package in R has a fa.parallel function to help determine the number of factors or components. From the documentation: One way to determine the number of factors or components in a data matrix or a correlation matrix is to examine the “scree" plot of the successive eigenvalues. Sharp breaks in the plot suggest the appropriate number of components or factors to extract. “Parallel" analyis is an alternative technique that compares the scree of factors of the observed data with...
Answer:
It's talking about principal components. First, it finds the eigenvalues of the correlation matrix which...
Jim at Cross Validated Mark as irrelevant Undo
Other solutions
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All methods that you mention in your question are unsupervised learning algorithms that can be interpreted...
Ferenc Huszár at Quora Mark as irrelevant Undo
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Here is a graphic I created to answer this. Note that the assumption is that the rectangular box contains...
Arsalan Qadri at Quora Mark as irrelevant Undo
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Factor analysis is done on the variables where as cluster analysis is done on the respondents i.e. In...
Anonymous at Blurtit.com Mark as irrelevant Undo
In factor analysis,varimax, quartimax and equamax rotation are the commonly used methods in orthogonal rotation.
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varimax rotation A method for rotating axes of a plot such that the eigenvectors remain orthogonal as...
interest... at Yahoo! Answers Mark as irrelevant Undo
How are they similar? How are they different? When would I use one over the other? Under what circumstances do they produce different results? A practical (intuitive?) answer is the most useful one. I'm quite comfortable with PCA, can do the math; and...
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PCA minimizes dimensions, preserving covariance of data. MDS minimizes dimensions, preserving distance...
Sriram Srinivasan at Quora Mark as irrelevant Undo
Psychological statistics experts needed! I have to write my thesis and I need help deciding on the statistics to use for my analysis. I have ideas, I just need clarification {more inside} (Note: This is a copy of an email I sent to my professors. If...
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I agree with jasper411 -- more info is needed here, but I'm guessing you'll end up wanting a repeated...
ajpresto at Ask.Metafilter.Com Mark as irrelevant Undo
I have conducted a personality survey with 310 samples which forms 41 variables (personalities) with a scale of 1-10, as well as their date of birth. Eventually I would like to see if participants could be grouped according to their behaviours through...
Wendy Macus at Quora Mark as irrelevant Undo
My question is simultaneously philosophical and practical. It's practical because it stems from an analysis I need to do. I have about 16 data points divided between 3 different groups. Each data point has very many attributes I can look into. Let's...
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I think using permutation statistics can help you get an intuitive handle on multiple comparison problems...
Trevor Brothers at Quora Mark as irrelevant Undo
Answers in Genesis: Upholding the Authority of the Bible from the Very First Verse Upholding the Authority of the Bible from the Very First Verse United Kingdom United States Other Countries ... Country: United States Language: English Good news About...
Answer:
Yes it is really accurate. However, who cares?????? This is absurd because Carbon-14 dating is not used...
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