sco: Score a multiple choice test

In irtoys: A Collection of Functions Related to Item Response Theory (IRT)

Score a multiple choice test

Description

Given a key, score a multiple choice test, i.e. recode the original choices to right (1) or wrong (0). Missing responses are treated as wrong.

Usage

sco(choices, key, na.false = FALSE)

Arguments

choices	The original responses to the items in the test: persons as rows, items as columns. May contain NA.
key	A vector containing the key (correct answers) to the items in choices. If not given, the function will check if all data are either 0, 1, or NA: if yes, NA are recoded as 0, else an error message is returned.
na.false	Recode non-responses to false responses?

Value

A matrix of responses scored 0=wrong 1=correct, and possibly NA

Author(s)

Ivailo Partchev

Examples

res <- sco(Unscored, key=c(2,3,1,1,4,1,2,1,2,3,3,4,3,4,2,2,4,3))

irtoys documentation built on May 12, 2022, 5:06 p.m.