as.data.frame.cat_output {irt} | R Documentation |
Convert a cat_output
object into a data.frame
.
Description
This function converts cat_output
objects to a
data.frame
object.
Usage
## S3 method for class 'cat_output'
as.data.frame(x, row.names = NULL, optional = FALSE, ...)
Arguments
x |
An |
row.names |
|
optional |
logical. If |
... |
additional arguments |
Value
A data frame with the following columns:
- true_ability
True ability of the simulee
- est_before
Ability estimate before administration of an item.
- se_before
Standard error before administration of an item.
- testlet_id
Administered testlet's ID.
- item_id
Administered item's ID.
- resp
Response to the item
- est_after
Ability estimate after the administration of an item.
- se_after
Standard error after administration of an item.
Author(s)
Emre Gonulates
Examples
ip <- generate_ip(n = 40)
cd <- create_cat_design(ip = ip, next_item_rule = 'mfi',
termination_rule = 'max_item',
termination_par = list(max_item = 10))
cat_data <- cat_sim(true_ability = rnorm(1), cd = cd)
as.data.frame(cat_data)
[Package irt version 0.2.9 Index]