probability: a function generates conditional probability for fixed...
In takuizum/irtfun2: Some useful functions for IRT
Description
Usage
Arguments
Author(s)
References
View source: R/mext-contract.R
Description
a function generates conditional probability for fixed ability on 2-parameter logistic model
Usage
1
probability(trait, a, b, c, D = 1.702)
Arguments
trait
a vector of theta in IRT.
a
a slope parameter
b
a location parameter
c
a lower asymptote parameter
D
a factor constant
Author(s)
The original Fortran77 program was developed by Inoue,S., December 1990., extended by Shibayama,T., January 1991., translated into R by Shibayama,T. September 2008., functionalized by Itamiya, C., & Shibuya. T., June 2018.
References
Kolen, M. J., & Brennan, R. L. (2014). Test Equating, Scaling, and Linking. Springer.
takuizum/irtfun2 documentation built on May 10, 2020, 8:30 a.m.
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.
Description Usage Arguments Author(s) References
View source: R/mext-contract.R
Description
a function generates conditional probability for fixed ability on 2-parameter logistic model
Usage
1 | probability(trait, a, b, c, D = 1.702)
|
Arguments
trait |
a vector of theta in IRT. |
a |
a slope parameter |
b |
a location parameter |
c |
a lower asymptote parameter |
D |
a factor constant |
Author(s)
The original Fortran77 program was developed by Inoue,S., December 1990., extended by Shibayama,T., January 1991., translated into R by Shibayama,T. September 2008., functionalized by Itamiya, C., & Shibuya. T., June 2018.
References
Kolen, M. J., & Brennan, R. L. (2014). Test Equating, Scaling, and Linking. Springer.
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.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.