TestInformationFunc: TIF for IRT
In exametrika: Test Theory Analysis and Biclustering
View source: R/04A_IRTbaseFunctions.R
TestInformationFunc R Documentation
TIF for IRT
Description
Test Information Function for 4PLM
Usage
TestInformationFunc(params, theta)
Arguments
params
parameter matrix
theta
ability parameter
Value
Returns a numeric vector representing the test information at each ability
level theta. The test information is the sum of item information functions for
all items in the test: I_{test}(\theta) = \sum_{j=1}^n I_j(\theta)
exametrika documentation built on Aug. 21, 2025, 5:27 p.m.
R Package Documentation
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View source: R/04A_IRTbaseFunctions.R
| TestInformationFunc | R Documentation |
TIF for IRT
Description
Test Information Function for 4PLM
Usage
TestInformationFunc(params, theta)
Arguments
params |
parameter matrix |
theta |
ability parameter |
Value
Returns a numeric vector representing the test information at each ability
level theta. The test information is the sum of item information functions for
all items in the test: I_{test}(\theta) = \sum_{j=1}^n I_j(\theta)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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