irt (version 0.1.1)

summary.cat_output: Summarizes the raw output of cat_sim

Description

This function summarizes a list consist of cat_output objects. It returns a summary data frame of the CAT simulation.

Usage

# S3 method for cat_output
summary(
  object,
  ...,
  cols = c("true_ability", "est_ability", "se", "test_length")
)

Arguments

object

This is a cat_output object or a list object containing elements that are "cat_output" class.

...

Additional arguments.

cols

The variables that will be included in the summary. There should be at least one column. Available columns are:

true_ability

True ability of the simulee

est_ability

Ability Estimate

se

Standard Error of the ability estimate

test_length

Test length.

bias

The difference between true ability and ability estimate

mse

Mean squared error

Value

This function returns a summary data frame of adaptive tests. Each row will represent a different adaptive test.

See Also

cat_sim

Examples

# NOT RUN {
n <- 100 # number of items
ip <- generate_ip(n = n,
                  content = sample(c("Algebra", "Arithmetic", "Geometry"),
                                   n, replace = TRUE))
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(5), cd = cd)
summary(cat_data)
# }