get.item.params: Get item parameters and standard errors as a data.frame from...
In jeppebundsgaard/RDigram: Analysis of Items from Tests and Surveys
View source: R/get.item.params.R
get.item.params R Documentation
Get item parameters and standard errors as a data.frame from a TAM or eRm object
Description
Get item parameters and standard errors as a data.frame from a TAM or eRm object
Usage
get.item.params(obj, type = c("andersen", "conquest"), include.se = F)
Arguments
obj
A TAM or eRm-object
type
For TAM-objects, return Andersen or Conquest ("IRT") parameters.
Details
Andersen parameters are given as easiness parameters as is the convention. Difficulty can be calculated as the negated version of the parameters.
Value
Returns a matrix of item parameters and standard errors, one row for each item
See Also
item.params.convert()
Examples
data(DHP)
tamobj<-digram.estimate(DHP)
get.item.params(tamobj)
jeppebundsgaard/RDigram documentation built on Oct. 29, 2023, 7:15 p.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.
View source: R/get.item.params.R
| get.item.params | R Documentation |
Get item parameters and standard errors as a data.frame from a TAM or eRm object
Description
Get item parameters and standard errors as a data.frame from a TAM or eRm object
Usage
get.item.params(obj, type = c("andersen", "conquest"), include.se = F)
Arguments
obj |
A TAM or eRm-object |
type |
For TAM-objects, return Andersen or Conquest ("IRT") parameters. |
Details
Andersen parameters are given as easiness parameters as is the convention. Difficulty can be calculated as the negated version of the parameters.
Value
Returns a matrix of item parameters and standard errors, one row for each item
See Also
item.params.convert()
Examples
data(DHP)
tamobj<-digram.estimate(DHP)
get.item.params(tamobj)
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.