| Analyze | Analyze test or rating scale data defined in 'dataList'. |
| ArcLength.plot | Plot the score index 'theta' as a function of arc length. |
| dataSimulation | Simulation Based Estimates of Root-mean-squared-err of Theta Estimates |
| density_plot | Plot the probability density function for a set of test scores |
| DHfun | Compute the first and second derivatives of the negative log likelihoods |
| entropies | Entropy measures of inter-item dependency |
| Entropy.plot | Plot item entropy curves for selected items or questions. |
| Hcurve | Construct grid of 101 values of the fitting function |
| Hfun | Compute the negative log likelihoods associated with a vector of score index values. |
| Hfuns.plot | Plot a selection of fit criterion H functions and their first two derivatives. |
| ICC.fit | Estimate the option probability and surprisal curves. |
| ICC.plot | Plot probability and surprisal curves for a selection of test or scale items. |
| keyshort | Option information for the short form of the SweSAT Quantitative test. |
| make.dataList | Make a list object containing information required for analysis of choice data. |
| mu.plot | Plot expected test score as a function of score index |
| Power.plot | Plot item power curves for selected items or questions. |
| Quantshort_dataList | List of objects essential for an analysis of the abbreviated SweSAT Quantitative multiple choice test. |
| Quantshort_infoList | Arclength or information arameter list for 24 items from the quantitative SweSAT subtest. |
| Quantshort_key | Option information for the short form of the SweSAT Quantitative test. |
| Quantshort_parList | Parameter list for 24 items from the quantitative SweSAT subtest. |
| Quantshort_U | Test data for 24 math calculation questions from the SweSAT Quantitative data. |
| scoreDensity | Compute and plot a score density histogram and and curve. |
| scorePerformance | Calculate mean squared error and bias for a set of score index values from simulated data. |
| SDS | The Symptom Distress Scale data. |
| SDS_dataList | List of objects essential for an analysis of the Symptom Distress Scale. |
| SDS_infoList | Arclength or information parameter list for 13 items in the Symptom Distress Scale. |
| SDS_key | Key for Symptom Distress Scale. |
| SDS_parList | Parameter list for the Symptom Distress Scale. |
| SDS_U | Test data for Symptom Distress Scale. |
| Sensitivity.plot | Plots all the sensitivity curves for selected items or questions. |
| testscore | Compute the expected test score by substituting probability of choices for indicator variable 0-1 values. Binary items assumed coded as two choice items. |
| TG_density.fd | Compute a Probability Density Function |
| theta.distn | Compute score density |
| theta2arclen | Compute results using arc length or information as the abscissa. |
| thetafun | Compute optimal scores |
| thetasearch | Ensure that estimated score index is global |
| Ushort | Test data for 24 math calculation questions from the SweSAT Quantitative data. |
| Usimulate | Simulate a test or scale data matrix. |
| usimulate | Simulate a test or scale data matrix. |
| Wbinsmth | Estimate the option probability and surprisal curves. |
| Wpca.plot | Plot the test information or scale curve in either two or three dimensions. |