RaschModel: Rasch Model
In exametrika: Test Theory Analysis and Biclustering
View source: R/04A_IRTbaseFunctions.R
RaschModel R Documentation
Rasch Model
Description
The one-parameter logistic model is a model with only one parameter b.
This model is a 2PLM model in which a is constrained to 1.
This model is also called the Rasch model.
Usage
RaschModel(b, theta)
Arguments
b
slope parameter
theta
ability parameter
Value
Returns a numeric vector of probabilities between 0 and 1, representing
the probability of a correct response given the ability level theta. The probability
is calculated using the formula: P(\theta) = \frac{1}{1 + e^{-(\theta-b)}}
exametrika documentation built on Aug. 21, 2025, 5:27 p.m.
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View source: R/04A_IRTbaseFunctions.R
| RaschModel | R Documentation |
Rasch Model
Description
The one-parameter logistic model is a model with only one parameter b. This model is a 2PLM model in which a is constrained to 1. This model is also called the Rasch model.
Usage
RaschModel(b, theta)
Arguments
b |
slope parameter |
theta |
ability parameter |
Value
Returns a numeric vector of probabilities between 0 and 1, representing
the probability of a correct response given the ability level theta. The probability
is calculated using the formula: P(\theta) = \frac{1}{1 + e^{-(\theta-b)}}
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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