Rasch Model Parameters by Pairwise Algorithm
S3 Summary for Item-Fit-Statistics
S3 Summary for Person-Fit-Statistics
S3 Summary for Q3 Fit Statistic
S3 Summary for Rasch Factor Analysis
Test information function
Andersen's Likelihood Ratio Test for Object of class "pers"
Category Probability Plots
Compute delta parameters from thurstonian thresholds
Expected Score Curves Plots
Tabulating Answer Categories in Data
Graphical Item Fit Plots
Graphical Model Check
Item information function
S3 logLik for Object of class "pers"
Likelihood Ratio Test for Object of class "pers"
Converting a booklet allocation table into a incidence matrix
Item Parameter Calculation
Item Parameter Calculation with Standard Errors
Rasch Model Parameters with pairwise
Item Fit Indices
Person Fit Indices
The Fischer-Scheiblechner Statistic S on item level (Wald like Test)
Person Separation Reliability
WLE - Rasch Person Parameter
S3 Plotting Graphical Model Check
S3 Plotting Thurstonian Thresholds
S3 Plotting Thustonian Thresholds with SE
S3 Plotting Person - Item Map
S3 Plotting Rasch Residual Factor Analysis
Point Biserial Correlations
Person Fit Index Q
Q3 Fit Statistic
S3 residuals for Object of class "pers"
Rasch Residual Factor Analysis
Simulate Response Pattern under Dichotomous and Polytomous Rasch Model
S3 Summary for graphical Model Check
S3 Summary for Item Parameter
S3 Summary for S-Statistic Test (Wald Test)
S3 Summary for Item Parameter with Standard Errors
S3 Summary for Person Separation Reliability
S3 Summary for Thetas
Performs the explicit calculation -- not estimation! -- of the Rasch item parameters for dichotomous and polytomous item responses, using a pairwise comparison approach. Person parameters (WLE) are calculated according to Warm's weighted likelihood approach.