irtoys: sco – R documentation

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sco

Score a multiple choice test

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.

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

`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?

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

Ivailo Partchev

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

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

v0.2.1

GPL (>= 2)

Authors

Ivailo Partchev [aut, cre], Gunter Maris [aut], Tamaki Hattori [ctb]

Initial release

2017-12-15