IIF2PLM: IIF for 2PLM
In exametrika: Test Theory Analysis and Biclustering
View source: R/04A_IRTbaseFunctions.R
IIF2PLM R Documentation
IIF for 2PLM
Description
Item Information Function for 2PLM
Usage
IIF2PLM(a, b, theta)
Arguments
a
slope parameter
b
location parameter
theta
ability parameter
Value
Returns a numeric vector representing the item information at each ability
level theta. The information is calculated as:
I(\theta) = a^2P(\theta)(1-P(\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
| IIF2PLM | R Documentation |
IIF for 2PLM
Description
Item Information Function for 2PLM
Usage
IIF2PLM(a, b, theta)
Arguments
a |
slope parameter |
b |
location parameter |
theta |
ability parameter |
Value
Returns a numeric vector representing the item information at each ability
level theta. The information is calculated as:
I(\theta) = a^2P(\theta)(1-P(\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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