formatOutput is a function for formatting the output examinee object
of the function maat for analysis.
formatOutput(examinee_list, digits = 3)the output from maat.
digits to round theta values. (default = 3)
a data frame containing:
p_ID: the person ID.
test_phase_ID: the module position. If we have 3 tests with 2 phases in each test then the range of test_phase_ID is 1 to 6.
initial_grade: the initial grade of the person.
final_grade: the final grade of the person after completing all modules.
grade_ID: the grade at the module position.
phase_ID: the phase at the module position.
test_ID: the test at the module position.
module_ID: the module ID at the module position.
final_theta_est: the grand final estimated \(\theta\) after completing all tests.
final_SE_est: the standard error of grand final estimated \(\theta\) after completing all tests.
theta_by_phase: the final estimated \(\theta\) after completing each phase.
SE_by_phase: the standard error of final estimated \(\theta\) after completing each phase.
combined: whether items were combined with the previous phase to obtain the theta estimate.
true_theta: the true \(\theta\) in each module position.
item_ID: the item IDs of administered items.
ncat: the number of categories of administered items.
IRT_model: the IRT models of administered items.
item_par_1: the first item parameter of each administered item (e.g., for 1PL, this is item difficulty)
item_par_2: the second item parameter of each administered item (e.g., for 1PL, this is `NA`)
item_resp: the item response on each administered item.
momentary_theta: the momentary (interim) \(\theta\) estimate obtained after each item administration in CAT engine.
momentary_SE: the standard error of momentary (interim) \(\theta\) estimate obtained after each item administration in CAT engine.