Note that Polytomous model needs the bottom category to be coded as 0.
The result tables are estimated by Marginal Maximum likelihood Estimation(MMLE).
The rationale of snowIRT module is described in the documentation.
Feature requests and bug reports can be made on my GitHub.
| Model Fit | |||
|---|---|---|---|
| Person Reliability | |||
| Scale | . | ||
| [3] | |||
| Item Statistics(Rating Scale Model) | |||||
|---|---|---|---|---|---|
| Measure | S.E.Measure | ||||
[3]
Note that Polytomous model needs the bottom category to be coded as 0.
The result tables are estimated by Marginal Maximum likelihood Estimation(MMLE).
The rationale of snowIRT module is described in the documentation.
Feature requests and bug reports can be made on my GitHub.
| Model Fit | |||
|---|---|---|---|
| Person Reliability | |||
| Scale | . | ||
| [3] | |||
| Item Statistics(Rating Scale Model) | |||||
|---|---|---|---|---|---|
| Measure | S.E.Measure | ||||
[3]
[1] The jamovi project (2022). jamovi. (Version 2.3) [Computer Software]. Retrieved from https://www.jamovi.org.
[2] R Core Team (2021). R: A Language and environment for statistical computing. (Version 4.1) [Computer software]. Retrieved from https://cran.r-project.org. (R packages retrieved from MRAN snapshot 2022-01-01).
[3] Robitzsch,A., Kiefer, T., & Wu, M. (2020). TAM: Test Analysis Modules. [R package]. Retrieved from https://CRAN.R-project.org/package=TAM.
[4] Martinkova, P., & Drabinova, A. (2018). ShinyItemAnalysis: for teaching psychometrics and to enforce routine analysis of educational tests. [R package]. Retrieved from https://CRAN.R-project.org/package=ShinyItemAnalysis.
[5] Seol, H. (2020). snowIRT: Item Response Theory for jamovi. [jamovi module]. Retrieved from https://github.com/hyunsooseol/snowIRT.