Test-or-Item-information: Test or Item information

In SICSresearch/IRTpp_old: Estimating IRT parameters using the IRT Methodology

Description

Computes the amount of test or item information. License :GPL (>= 2) Adapted from ltm_1.0 package

Usage

information(object, range, items = NULL, ...)

Arguments

object	a matrix (con los coeficientes estimados)
range	a interval for which the test information should be computed.
items	the items for which the information shoulb be computed.

Details

The amount of information is computed as the area under the Item or Test Information Curve.

Value

TotalInfo the total amount of information.

RangeInfo the amount of information in the specified interval.

RangeProp the proportion of information in the specified interval.

Range the value of range argument

items the value of items argument

References

Reckase, M. (2009). Multidimensional item response theory. New York: Springer.

Baker, F. B., & Kim, S. H. (Eds.). (2004). Item response theory: Parameter estimation techniques. CRC Press.

SICSresearch/IRTpp_old documentation built on May 9, 2019, 11:12 a.m.