| classicaltest | Classical test theory item and person statistics |
| correct | Scoring correct/incorrect answers |
| ctitem | Classical test theory item statistics |
| ctperson | Classical test theory person statistics |
| dichodata | Simulated multiple choice data with 1000 cases, and 20 items |
| dichokey | Keys for dichodata |
| dichotomize | Dichotomize data |
| pointbiserial | Point-biserial correlation |
| polydata | Simulated polytomous items data with 1000 cases, and 20 items |