summary.irt.pars {plink} | R Documentation |
This function summarizes the item parameters for a given object. If the object is
of class "link"
, the function prints the linking constants
## S3 method for class 'irt.pars': summary(object, descrip = FALSE, ...) ## S3 method for class 'sep.pars': summary(object, descrip = FALSE, ...) ## S3 method for class 'list': summary(object, descrip = FALSE, ...) ## S3 method for class 'link': summary(object, descrip = FALSE, ...)
object |
an R object. See details below |
... |
further arguments passed to or from other methods |
descrip |
if TRUE ,print descriptive statistics for the item parameters in
object . |
The method for objects of class "irt.pars"
summarizes the parameters for a single
group or multiple groups. If multiple groups are included in the object, parameters will
be summarized for each group separately.
The method for objects of class "sep.pars"
summarizes the parameters for a single
"sep.pars"
object.
Objects of class "list"
can include any combination of "irt.pars"
or
"sep.pars"
objects. The parameters will be summarized for each group separately.
The method for objects of class "link"
prints the linking constants for n-1 groups.
If descrip
= TRUE
, the method summarizes the parameters for all groups
separately.
For the summary of linking constants, the group labels identify the 'From' group first then the 'To' group. For example 'Group1/Group2' indicates that the linking constants transformed the group 1 parameters to the group 2 scale. The asterisk in the labels identifies the base group.
Jonathan Weeks weeksjp@gmail.com
as.irt.pars
, irt.pars
, sep.pars
,
sep.pars
, link