debug CFA

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Holly Varjak

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Aug 1, 2018, 4:21:40 PM8/1/18

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My error message is:

Error in lav_samplestats_from_data(lavdata = lavdata,

missing = lavoptions$missing, :

lavaan ERROR: Gamma (NACOV) matrix is not positive-definite

In addition: warning message:

In lav_samplestats_from_data(lavdata = lavdata,

missing = lavoptions$missing, :

lavaan WARNING: number of observations (731) too small to compute

Gamma

The data sets are ordinal, Factor1 ranges from 0 to 3 and Factor2 1 to 5

The model I used:

twotest.model <- 'Factor1 =~ item1 + item2 + ...(continues)... + item20

Factor2 =~ item1 + item2 + ...(continues)... + item28'

fit <- cfa(twotest.model , data= combinedlist, missing = "listwise", estimator ="WLS")

summary(fit, fitmeasures=true)

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Jeremy Miles

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Aug 1, 2018, 4:58:34 PM8/1/18

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Your sample is too small for the number of variables in your model. (You have a lot of variables.)

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