CSEM: Calculate CSEM for 3PL or GPC for multiple items and a vector...

Description Usage Arguments Value

Description

Calculate CSEM for 3PL or GPC for multiple items and a vector of theta values

Usage

1
CSEM(theta, IRT.par, IRT.model = "3PL", IRT.scale = 1.7)

Arguments

theta

A vector of ability values

IRT.par

A matrix of IRT parameters. This should have the columns required by the IRT model of choice.

IRT.model

A vector of character strings that specify the IRT model for each item. This can also be a single value, which will be recycled.

IRT.scale

A vector of scaling parameters used in the IRT models. This can also be a single value, which will be recycled.

Value

A vector of CSEM values for each of theta points over all items.


yuehmeir2/myFormAssembler documentation built on June 9, 2021, 3:42 a.m.