R: Classical Test Theory Functions

# Classical Test Theory Functions

## Documentation for package ‘CTT’ version 2.3.4

- DESCRIPTION file

## Help Pages

CTT-package | Classical Test Theory Functions
CTT | Classical Test Theory Functions
CTTdata | Example Multiple-Choice Data
cttICC | Function for producing theoretical and empirical item characteristic curves.
CTTkey | Example Multiple-Choice Key
disattenuated.cor | Function for disattentuated correlation
distractor.analysis | Function for item distractor analysis
distractorAnalysis | Function for item distractor analysis
itemAnalysis | Function for item reliability analysis
polyserial | Function for calculating polyserial correlations
reliability | Function for item reliability analysis
score | Function to score the response files
score.transform | Function for transforming scores onto different scales
spearman.brown | Functions for Spearman-Brown "Prophecy" Formula
subscales | Function to create subscales based on a design matrix