S3 Method for Descriptive Statistics of Objects
Wright Map for Item Response Models by Using the 'WrightMap' Package
Observed and Expected Frequencies for Univariate and Bivariate Distributions
RMSD Item Fit Statistics for 'TAM' Objects
Extracting Individual Likelihood and Individual Posterior
Linear Approximation of a Confirmatory Factor Analysis
Thurstonian Thresholds and Wright Map for Item Response Models
Converts a theta Score into a True Score tau ( theta)
Individual Likelihood for Confirmatory Factor Analysis
Computes Individual Likelihood from Classical Test Theory Estimates
S3 Method for Standardizations and Transformations of Variables
Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
Extracting Item Parameters from a Fitted 'cfa' Object in 'lavaan'
More Datasets and Examples (Similar to ConQuest Examples)
Dataset FIMS Study with Responses of Australian and Japanese Students
Dataset with Raw and Scored Responses from Multiple Choice Items
Dataset TIMSS 2011 of Australian and Taiwanese Students
Slight Extension of the 'lavaan' Syntax, with Focus on Item Response Models
Mean Squared Residual Based Item Fit Statistics (Infit, Outfit)
Plot Function for Unidimensional Item Response Models
Expected Values and Predicted Probabilities for Fitted 'TAM' Models
Classical Test Theory Based Statistics and Plots
Bifactor Model and Exploratory Factor Analysis
Linking of Fitted Unidimensional Item Response Models in 'TAM'
3PL Structured Item Response Model in 'TAM'
Test Analysis Modules: Marginal Maximum Likelihood Estimation
Unidimensional Non- and Semiparametric Item Response Model
Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
Item Response Function for the 3PL Model
Conversion of Plausible Value Object into Datalist
Descriptive Statistics for Weighted Data