TIMSSParameters: TIMSS 2015 4th Grade Math Polytomous Item Parameters.
In AnthonyRaborn/cvIRT: Cross Validation and Bootstrap Methods for IRT Model Selection
Description
Usage
Format
Source
Description
A dataset containing multiple sets of polytomous item parameters based on the 2015 TIMSS Math test.
Usage
1
Format
A data frame with 160 rows and 7 columns:
- Item
the item
- Model
the polytomous model it fits
- Step1
the first step difficulty parameter
- Difficulty
the difficulty parameter
- Step2
the second step difficulty parameter
- Discrimination
the item discrimination
- Reversed
whether the item step parameters are allowed to be reversed (Step2 < Step1)
Source
https://timss.bc.edu/timss2015/international-database/
AnthonyRaborn/cvIRT documentation built on Jan. 9, 2020, 3:26 a.m.
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Description Usage Format Source
Description
A dataset containing multiple sets of polytomous item parameters based on the 2015 TIMSS Math test.
Usage
1 |
Format
A data frame with 160 rows and 7 columns:
- Item
the item
- Model
the polytomous model it fits
- Step1
the first step difficulty parameter
- Difficulty
the difficulty parameter
- Step2
the second step difficulty parameter
- Discrimination
the item discrimination
- Reversed
whether the item step parameters are allowed to be reversed (Step2 < Step1)
Source
https://timss.bc.edu/timss2015/international-database/
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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