CalculatePiIStarPrime: Calculate value for pi.i.star.prime for one item
Description
Given an NCRUM parameterization and values for pi.i.star, r.ia.star, and qmatrix, calculates the value for
for pi.i.star.prime for the given item
Usage
CalculatePiIStarPrime(pi.i.star, r.ia.star, q.ia)
Arguments
pi.i.star
a numeric value for the probability that a person responds correctly given they have not mastered
any attributes before being penalized for not mastering an attribute.
r.ia.star
a numeric 1 x nattributes vector of the penalty probabilities for this item of a correct response
for each required attribute that has not been mastered.
q.ia
a numeric 1 x nattributes vector of the qmatrix entries for the given item.
Value
a numeric value representing the pi.i.star_prime for item i