irt_expected_cov_matrix: Calculate expected item covariance matrix for a population
In sebastianueckert/funsu: Collection of Useful Functions

Calculate expected item covariance matrix for a population

1 2	irt_expected_cov_matrix(model, mu = NULL, sigma = NULL, settings = settings.irt_expected())

`model`	A `mirt` model
`mu`	The mean of latent variable values
`sigma`	The variance-covariance matrix of the latent variable values

The variance covariance matrix of the assessment

1 2	fit <- mirt::mirt(mirt::Science, 1) irt_expected_cov_matrix(fit)

sebastianueckert/funsu documentation built on Nov. 5, 2019, 8:48 a.m.

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