Description Usage Arguments Value
View source: R/util_parameter.R
Calculates the probability of a correct response for an item given an NCRUM parameterization
1 | GetProbCorrectNcrum(pi.i.star.prime, r.ia.star, q.ia, alphas)
|
pi.i.star.prime |
a numeric value for the probability of a correct response for item i given that no attributes have been mastered. |
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. |
alphas |
a numeric 1 x nattributes vector with a 1 if a student has mastered an attribute and 0 otherwise. |
the numeric value representing the probability of a correct response for the ith item.
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