get_tau | R Documentation |
Searches the item bank for matching items, and returns the difficulty estimates. Matching is done by item name. Comparisons are done in lower case.
get_tau(
items,
key = NULL,
itembank = dscore::builtin_itembank,
verbose = FALSE
)
items |
A character vector containing names of items to be
included into the D-score calculation. Milestone scores are coded
numerically as |
key |
String. Name of the key that bundles the difficulty estimates
pertaining one the same Rasch model. View |
itembank |
A |
verbose |
Logical. Print settings. |
A named vector with the difficulty estimate per item with
length(items)
elements.
Stef van Buuren 2020
builtin_itembank()
, dscore()
# difficulty levels in the GHAP lexicon
get_tau(items = c("ddifmd001", "DDigmd052", "xyz"))
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