updateThetaUsingCombined
is a function for updating '>examinee
objects after completing a module.
updateThetaUsingCombined
adds final theta estimates using all administered items in the test. A test may consist of multiple phases.
updateThetaUsingCombined(examinee_object, current_module_position, config)
the current module position.
an '>examinee
object with its estimated_theta_by_test
slot updated.