Class klausuR

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Description

This class is used for objects that are returned by klausur.

Slots

results

A data.frame with global results

answ

A data.frame with all given answers

corr

A vector with the correct answers

wght

A vector with the weights of items

points

A data.frame with resulting points given for the answers

marks

A vector with assignments of marks to achieved score

marks.sum

A more convenient matrix with summary information on the defined marks

trfls

A data.frame of TRUE/FALSE values, whether a subject was able to solve an item or not

anon

A data.frame for anonymous feedback

mean

A table with mean, median and quartiles of the test results

sd

Standard deviation of the test results

cronbach

Internal consistency, a list of three elements "alpha", "ci" (confidence interval 95%) and "deleted" (alpha if item was removed)

item.analysis

A data.frame with information on difficulty, discriminant power, discriminant factor and selection index of all items.

distractor.analysis

A list with information on the selected answer alternatives for each individual item.

test

Currently an empty placeholder. Planned to hold the actual test items in future releases.

misc

Anything that was stored in the misc slot of the input data.