eap {irtoys}

EAP estimation of ability

Description

Estimates the expectation of the posterior distribution of the latent variable ("ability") for each person.

Usage

eap(resp, ip, qu)

Arguments

resp

A matrix of responses: persons as rows, items as columns, entries are either 0 or 1, no missing data

ip

Item parameters: the object returned by est.

qu

A quadrature object produced with normal.qu or read in with read.qu.icl

Value

A matrix with the ability estimates in column 1, and their standard errors of measurement (SEM) in column 2, and the number of non-missing reponses in column 3

Author(s)

Ivailo Partchev

See Also

mlebme, normal.qu, read.qu.icl

Examples

th.eap <- eap(resp=Scored, ip=Scored2pl, qu=normal.qu())