RaschModel {exametrika} | 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)}}
[Package exametrika version 1.1.0 Index]