Information Analysis for Test and Rating Scale Data

Analyze | Analyze test or rating scale data defined in 'dataList'. |

chcemat_simulate | Simulate a test or scale data matrix. |

dataSimulation | Simulation Based Estimates of Error Variation of Score Index... |

density_plot | Plot the probability density function for a set of test... |

DFfun | Compute the first and second derivatives of the negative log... |

entropies | Entropy measures of inter-item dependency |

Entropy_plot | Plot item entropy curves for selected items or questions. |

eval.surp | Values of a Functional Data Object Defining Surprisal Curves. |

Fcurve | Construct grid of 101 values of the fitting function |

Ffun | Compute the negative log likelihoods associated with a vector... |

Ffuns_plot | Plot a selection of fit criterion F functions and their first... |

ICC_plot | Plot probability and surprisal curves for test or scale... |

index2info | Compute results using arc length or information as the... |

index_distn | Compute score density |

index_fun | Compute optimal scores |

index_search | Ensure that estimated score index is global |

make_dataList | Make a list object containing information required for... |

mu | Compute the expected test score by substituting probability... |

mu_plot | Plot expected test score as a function of score index |

Power_plot | Plot item power curves for selected items or questions. |

Quant_13B_problem_chcemat | Test data for 24 math calculation questions from the SweSAT... |

Quant_13B_problem_dataList | List of objects essential for an analysis of the abbreviated... |

Quant_13B_problem_infoList | Arclength or information parameter list for 24 items from the... |

Quant_13B_problem_key | Option information for the short form of the SweSAT... |

Quant_13B_problem_parmList | Parameter list for 24 items from the quantitative SweSAT... |

Sbinsmth | Estimate the option probability and surprisal curves. |

Sbinsmth_nom | List vector containing numbers of options and boundaries. |

Scope_plot | Plot the score index 'index' as a function of arc length. |

scoreDensity | Compute and plot a score density histogram and and curve. |

scorePerformance | Calculate mean squared error and bias for a set of score... |

Sensitivity_plot | Plots all the sensitivity curves for selected items or... |

SimulateData | Simulate Choice Data from a Previous Analysis |

smooth.ICC | Smooth binned probability and surprisal values to make an... |

smooth.surp | Fit data with surprisal smoothing. |

Spca | Functional principal components analysis of information curve |

Spca_plot | Plot the test information or scale curve in either two or... |

TestGardener-package | Analyses of Tests and Rating Scales using Information or... |

TestInfo_svd | Image of the Test Tnformation Curve in 2 or 3 Dimensions |

TG_analysis | Statistics for Multiple choice Tests, Rating Scales and Other... |

TG_density.fd | Compute a Probability Density Function |

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