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hornpa  

Horn's (1965) Test to Determine the Number of Components/Factors
View on CRAN: Click here


Download and install hornpa package within the R console
Install from CRAN:
install.packages("hornpa")

Install from Github:
library("remotes")
install_github("cran/hornpa")

Install by package version:
library("remotes")
install_version("hornpa", "1.1.1")



Attach the package and use:
library("hornpa")
Maintained by
Francis Huang
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2015-03-03
Latest Update: 2025-05-03
Description:
A stand-alone function that generates a user specified number of random datasets and computes eigenvalues using the random datasets (i.e., implements Horn's [1965, Psychometrika] parallel analysis ). Users then compare the resulting eigenvalues (the mean or the specified percentile) from the random datasets (i.e., eigenvalues resulting from noise) to the eigenvalues generated with the user's data. Can be used for both principal components analysis (PCA) and common/exploratory factor analysis (EFA). The output table shows how large eigenvalues can be as a result of merely using randomly generated datasets. If the user's own dataset has actual eigenvalues greater than the corresponding eigenvalues, that lends support to retain that factor/component. In other words, if the i(th) eigenvalue from the actual data was larger than the percentile of the (i)th eigenvalue generated using randomly generated data, empirical support is provided to retain that factor/component. Horn, J. (1965). A rationale and test for the number of factors in factor analysis. Psychometrika, 32, 179-185.
How to cite:
Francis Huang (2015). hornpa: Horn's (1965) Test to Determine the Number of Components/Factors. R package version 1.1.1, https://cran.r-project.org/web/packages/hornpa. Accessed 20 Aug. 2026.
Previous versions and publish date:
(2026-07-09 07:47), 1.0 (2015-03-03 01:01), 1.1.0 (2022-05-09 21:40)
Other packages that cited hornpa R package
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Complete documentation for hornpa
Functions, R codes and Examples using the hornpa R package
Some associated functions: hornpa . 
Some associated R codes: hornpa.R .  Full hornpa package functions and examples
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