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Comparing model fit when changing ass... |
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Carla Bann posted on Tuesday, June 26, 2007 - 9:53 am
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I am running a latent profile analysis. I would like to compare a 4 class model assuming equal variances for the indicator variables to one allowing the variances to be freely estimated. Is there a way to determine whether freeing the variances significantly improves the model fit? For example, would it be appropriate to compute a chi-square difference test using the values for the 2 models listed as "Loglikelihood H0 value?" Thank you! |
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You can use the loglikelhoods from the two models. -2 times the loglikelihood difference is in the chi-square metric. |
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Carla Bann posted on Tuesday, June 26, 2007 - 10:28 am
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Thank you for the help! |
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