Cronbach's alpha

[victorshiramizu]

Hi there,
I'm using the cronbachalpha function but my matrix is not positive definite.
The R psych package employs the cor.smooth function to find the eigenvalues and then adjusts the negative ones by making them slightly positive.
I wonder if there's a similar function in the StatsBase package or if there's another way to do this using Julia.
Kind regrds,
Victor.