nops_itemresp: Extract Item-Response Data from NOPS Exams

In c403: Exam Tools for Department of Statistics (c403), Uni Innsbruck

Extract Item-Response Data from NOPS Exams

Description

Process data from NOPS evaluation results (via nops_eval) for subsequent IRT (item response theory) modeling.

Usage

nops_itemresp(
  eval = "nops_eval.csv",
  exam = Sys.glob("*.rds"),
  psychotools = NULL,
  labels = NULL,
  ...
)

Arguments

eval	character. File name of CSV output from nops_eval.
exam	character. File name of RDS output from exams2nops.
psychotools	logical. Should itemresp from psychotools be used as the class for item response columns? By default, this is used if the psychotools package is available. If FALSE, matrices with dummy codings are used.
labels	function for extracting exercise labels from each $metainfo. By default the original file name $metainfo$file is used.
...	additional arguments (such as colClasses) passed to read.csv2(eval, dec = ".", ...).

Details

nops_itemresp returns a data frame with several item response outcomes for each student: solved indicates whether or not an exercise was fully solved, partial whether or not it was at least partially solved. points gives the points achieved for each exercise. The corresponding nsolved, npartial, and npoints are the sums of these for each student. Moreover, solved2, partial2, and points2 distinguish not only the exercises within the exam but also the actual source template within each exercise.

Value

A data.frame.

See Also

nops_eval

c403 documentation built on Oct. 20, 2023, 3:01 p.m.