GetAllProbsCorrectNcrum: Calculate all item probabilities of correct response for...

In dcmr: Attribute profile estimation using Diagnostic Classification Models and MCMC

Description

Calculates the probabilities of a correct response for all items given an NCRUM parameterization

Usage

GetAllProbsCorrectNcrum(pi.i.star.prime, r.ia.star.qmatrix, qmatrix, alphas)

Arguments

pi.i.star.prime	a numeric 1 x nitems vector of the probabilities of a correct response for each item given that no attributes have been mastered.
r.ia.star.qmatrix	a numeric nitems x nattributes vector of the penalty probabilities for each item of a correct response for each required attribute that has not been mastered.
qmatrix	a numeric nitems by nattributes matrix that specifies which items are required for mastery of each attribute (i.e., latent variable)
alphas	a numeric 1 x n_attributes vector with a 1 if a student has mastered an attribute and 0 otherwise.

Value

probabilities of a correct response for all items given a person's attribute profile.

dcmr documentation built on May 29, 2017, 10:41 p.m.