Tabulating Answer Categories in Data
Likelihood Ratio Test for Object of class "pers"
Graphical Item Fit Plots
Booklet allocation table for Math PISA (2003) data
Item information function
Compute delta parameters from thurstonian thresholds
Expected Score Curves Plots
Dichotomous example data in Rost 2004
S3 logLik for Object of class "pers"
Graphical Model Check
Converting a booklet allocation table into a incidence matrix
Item Fit Indices
Item Parameter Calculation with Standard Errors
The Fischer-Scheiblechner Statistic S on item level (Wald like Test)
WLE - Rasch Person Parameter
Item Parameter Calculation
S3 Plotting Graphical Model Check
Rasch Model Parameters with pairwise
Q3 Fit Statistic
Point Biserial Correlations
Person Separation Reliability
Person Fit Indices
S3 residuals for Object of class "pers"
Rasch Residual Factor Analysis
Simulate Response Pattern under Dichotomous and Polytomous Rasch Model
S3 Summary for Rasch Factor Analysis
S3 Summary for Q3 Fit Statistic
S3 Summary for Item Parameter with Standard Errors
S3 Plotting Person - Item Map
S3 Plotting Rasch Residual Factor Analysis
Simulated Data
S3 Summary for Person Separation Reliability
S3 Summary for S-Statistic Test (Wald Test)
S3 Plotting Thurstonian Thresholds
S3 Plotting Thustonian Thresholds with SE
Test information function
S3 Summary for Item Parameter
S3 Summary for graphical Model Check
S3 Summary for Person-Fit-Statistics
S3 Summary for Item-Fit-Statistics
S3 Summary for Thetas
5 polytomous personality items
Category Probability Plots
Person Fit Index Q
Andersen's Likelihood Ratio Test for Object of class "pers"
Knox Cube Test Data from Wright & Stone (1979)
Math PISA (2003) data
Polytomous example data in Rost 2004
Covariates to the bfiN Data
5 polytomous personality items
Data from PISA 2012 - German Sample