Description Usage Arguments Value
Calculates beta vectors per person based on covariate values.
1 | calc_itemvecs(betas, delta, covariates)
|
betas |
Itemparameter intercepts |
delta |
DIF-parameter-matrix (nrow = ncovariates, ncol = nitems) |
covariates |
Matrix of covariate values of all persons (n x num. of covs) |
Matrix with itemparameters per person.
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