ata                     Automated Test Assembly (ATA)
cat_sim                 Simulation of Computerized Adaptive Testing
                        (CAT)
cronbach_alpha          Cronbach's alpha
expected_raw_score_dist
                        #' Distribution of Expected Raw Scores
freq                    Frequency Counts
model_3pl               3-parameter-logistic model
model_gpcm              Generalized Partial Credit Model
model_grm               Graded Response Model
mst_sim                 Simulation of Multistage Testing
rmse                    Root Mean Squared Error
spearman_brown          Spearman Brown Prophecy
