I'd like to compare between two sofware SPSS and Statgraphic centurion version 15 for principle component analysis and factor analysis.The factorability tests include the Kaiser-Meyer-Olsen (KMO) measure of sampling adequacy and Bartlett’s test of sphericity" in Statgraphics centurion version 15.
As Predrag said that in SPSS you choose Analyze, Dimension Reduction, Factor Analysis, and then select Descriptives. The last step is to check in KMO and Barlett`s test of sphericity, then OK. You will get the results you wanted.
Can we check or calculate KMO and Barlett's test without using the software SPSS?. I wonder that if the Stargraphic centuron version 15 or older does not have the function of KMO and Barlett's test, how could it carry out the Factor analysis or PCA sufficiently?
Dear RG colleague,
The KMO statistic, which can vary from 0 to 1, indicates the degree to which each variable in a set is predicted without error by the other variables. A value of 0 indicates that the sum of partial correlations is large relative to the sum correlations, indicating factor analysis is likely to be inappropriate . A KMO value close to 1 indicates that the sum of partial correlations is not large relative to the sum of correlations and so factor analysis should yield distinct and reliable factors. Hair et al. (2006) suggest accepting a value of 0.5 or more. values between 0.5 and 0.7 are mediocre, and values between 0.7 and 0.8 are good.
Bartlett’s test of sphericity is a statistical test for the presence of correlations among variables, providing the statistical probability that the correlation matrix has significant correlations among at least some of variables. For factor analysis to work some relationships between variables are needed. Thus, a significant Bartlett’s test of sphericity is required, say p
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