Data Management and Analysis of Tests

---

Documentation for package ‘dexter’ version 1.5.0

• 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