array_info_3pl: Calculate Fisher information at multiple thetas (3PL)
Description
Calculate the Fisher information at theta values according to the 3PL model.
Usage
array_info_3pl(x, a, b, c)
Arguments
x
Numeric. A vector of theta values.
a
Numeric. A slope parameter value.
b
Numeric. A difficulty parameter value.
c
Numeric. A guessing parameter value.
References
birnbaum_latent_1968TestDesign