A function used to get additional item-level information, such as ICC probabilities, and item information.

A function used to get additional item-level information, such as ICC probabilities, and item information.

irt_item_fit(wizirt_fit, stats = c("X2"))

Arguments

wizirt_fit	An object coming from the fit_wizirt function.
stats	A character or character string identifying item-level fit measures. Must be at least one of c('Zh', 'X2', 'G2', 'infit'). More are coming very soon. Default is 'X2'.

Value

A list with item_stats (item-level statistics), item_information (data for item and test information), and item_probabilities (data for ICC curves).

Examples

ifa <- wizirt2:::irt_item_fit(my_model)
#> Error in loadNamespace(name): there is no package called 'wizirt2'