# Data Management and Analysis of Tests

## Documentation for package ‘dexter’ version 1.4.2

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

dexter-package | Dexter: data analyses for educational and psychological tests.
ability | Estimate abilities
ability_tables | Estimate abilities
add_booklet | Add response data to a project
add_item_properties | Add item properties to a project
add_person_properties | Add person properties to a project
add_response_data | Add response data to a project
close_project | Close a project
coef.p2pass | extract equating information
coef.prms | extract enorm item parameters
coef.sts_par | Standard setting
design_info | Information about the design
dexter | Dexter: data analyses for educational and psychological tests.
DIF | Exploratory test for Differential Item Functioning
distractor_plot | Distractor plot
expected_score | Functions of theta
fit_domains | Estimate the Rasch and the Interaction model per domain
fit_enorm | Fit the extended nominal response model
fit_inter | Estimate the Interaction and the Rasch model
get_booklets | Booklets entered in a project
get_design | Test design
get_items | Items in a project
get_persons | Persons in a project
get_responses | Selecting data
get_resp_data | Functions for developers
get_resp_matrix | Functions for developers
get_rules | Get scoring rules
get_testscores | Get test scores
get_variables | Variables that are defined in the project
individual_differences | Test individual differences
information | Functions of theta
keys_to_rules | Derive scoring rules from keys
latent_cor | Latent correlations
open_project | Open an existing project
plausible_scores | Draw plausible test scores
plausible_values | Draw plausible values
plot.DIF_stats | plot method for pairwise DIF statistics
plot.p2pass | A plot method for probability_to_pass
plot.prms | Plot for the extended nominal Response model
plot.rim | A plot method for the interaction model
plot.sts_par | Standard setting
probability_to_pass | The probability to pass on a reference test given a score on a new booklet
profiles | Profile analysis
profile_plot | Profile plot
profile_tables | Profile analysis
p_score | Functions of theta
ratedData | Rated data
ratedDataProperties | Item properties in the rated data
ratedDataRules | Scoring rules for the rated data
read_oplm_par | Read item parameters from oplm PAR or CML files
r_score | Functions of theta
r_score_IM | Simulation from the interaction model
standards_3dc | Standard setting
standards_db | Export a standard setting database for use by the free 3DC application
start_new_project | Start a new project
start_new_project_from_oplm | Start a new project from oplm files
tia_tables | Simple test-item analysis
touch_rules | Add or modify scoring rules
verbAggrData | Verbal aggression data
verbAggrProperties | Item properties in the verbal aggression data
verbAggrRules | Scoring rules for the verbal aggression data