# Test Analysis Modules

## Documentation for package ‘TAM’ version 4.3-25

- DESCRIPTION file.
- Package NEWS.

## Help Pages

A C D E I L M P R S T W misc

TAM-package | Test Analysis Modules

## -- A --

add.lead | Utility Functions in 'TAM'
anova.tam | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
anova.tam.latreg | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
anova.tam.mml | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
anova.tam.mml.3pl | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
anova.tam.np | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
anova.tamaan | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value

## -- C --

cfa.extract.itempars | Extracting Item Parameters from a Fitted 'cfa' Object in 'lavaan'

## -- D --

data.cqc01 | More Datasets and Examples (Similar to ConQuest Examples)
data.cqc02 | More Datasets and Examples (Similar to ConQuest Examples)
data.cqc03 | More Datasets and Examples (Similar to ConQuest Examples)
data.cqc04 | More Datasets and Examples (Similar to ConQuest Examples)
data.cqc05 | More Datasets and Examples (Similar to ConQuest Examples)
data.ctest | Some C-Test Datasets
data.ctest1 | Some C-Test Datasets
data.ctest2 | Some C-Test Datasets
data.ex08 | Datasets 'data.ex' in 'TAM' Package
data.ex10 | Datasets 'data.ex' in 'TAM' Package
data.ex11 | Datasets 'data.ex' in 'TAM' Package
data.ex12 | Datasets 'data.ex' in 'TAM' Package
data.ex14 | Datasets 'data.ex' in 'TAM' Package
data.ex15 | Datasets 'data.ex' in 'TAM' Package
data.ex16 | Datasets 'data.ex' in 'TAM' Package
data.ex17 | Datasets 'data.ex' in 'TAM' Package
data.exJ03 | Datasets 'data.ex' in 'TAM' Package
data.fims.Aus.Jpn.raw | Dataset FIMS Study with Responses of Australian and Japanese Students
data.fims.Aus.Jpn.scored | Dataset FIMS Study with Responses of Australian and Japanese Students
data.geiser | Dataset from Geiser et al. (2006)
data.gpcm | Dataset with Ordered Indicators
data.janssen | Dataset from Janssen and Geiser (2010)
data.janssen2 | Dataset from Janssen and Geiser (2010)
data.mc | Dataset with Raw and Scored Responses from Multiple Choice Items
data.numeracy | Dataset Numeracy
data.sim.facets | Simulated Multifaceted Data
data.sim.mfr | Simulated Multifaceted Data
data.sim.rasch | Simulated Rasch data
data.sim.rasch.missing | Simulated Rasch data
data.sim.rasch.pweights | Simulated Rasch data
data.timssAusTwn | Dataset TIMSS 2011 of Australian and Taiwanese Students
data.timssAusTwn.scored | Dataset TIMSS 2011 of Australian and Taiwanese Students
DescribeBy | S3 Method for Descriptive Statistics of Objects
designMatrices | Generation of Design Matrices
designMatrices.mfr | Generation of Design Matrices
designMatrices.mfr2 | Generation of Design Matrices
doparse | Parsing a String with 'DO' Statements

## -- E --

EAPrel | Reliability Estimation in 'TAM'

## -- I --

IRT.cv | Cross-Validation of a Fitted IRT Model
IRT.cv.tam.np | Unidimensional Non- and Semiparametric Item Response Model
IRT.data.tam.mml | Extracting Item Response Dataset
IRT.data.tam.mml.3pl | Extracting Item Response Dataset
IRT.data.tamaan | Extracting Item Response Dataset
IRT.drawPV | Function for Drawing Plausible Values
IRT.expectedCounts.tam | Extracting Expected Counts
IRT.expectedCounts.tam.mml | Extracting Expected Counts
IRT.expectedCounts.tam.mml.3pl | Extracting Expected Counts
IRT.expectedCounts.tam.np | Extracting Expected Counts
IRT.expectedCounts.tamaan | Extracting Expected Counts
IRT.factor.scores.tam | Extracting Factor Scores in 'TAM'
IRT.factor.scores.tam.mml | Extracting Factor Scores in 'TAM'
IRT.factor.scores.tam.mml.3pl | Extracting Factor Scores in 'TAM'
IRT.factor.scores.tamaan | Extracting Factor Scores in 'TAM'
IRT.frequencies.tam.mml | Observed and Expected Frequencies for Univariate and Bivariate Distributions
IRT.frequencies.tam.mml.3pl | Observed and Expected Frequencies for Univariate and Bivariate Distributions
IRT.frequencies.tamaan | Observed and Expected Frequencies for Univariate and Bivariate Distributions
IRT.informationCurves | Item and Test Information Curve
IRT.informationCurves.tam.mml | Item and Test Information Curve
IRT.informationCurves.tam.mml.2pl | Item and Test Information Curve
IRT.informationCurves.tam.mml.3pl | Item and Test Information Curve
IRT.informationCurves.tam.mml.mfr | Item and Test Information Curve
IRT.irfprob.tam | Extracting Item Response Functions
IRT.irfprob.tam.mml | Extracting Item Response Functions
IRT.irfprob.tam.mml.3pl | Extracting Item Response Functions
IRT.irfprob.tam.np | Extracting Item Response Functions
IRT.irfprob.tamaan | Extracting Item Response Functions
IRT.itemfit.tam.mml | RMSD Item Fit Statistics for 'TAM' Objects
IRT.itemfit.tam.mml.2pl | RMSD Item Fit Statistics for 'TAM' Objects
IRT.itemfit.tam.mml.3pl | RMSD Item Fit Statistics for 'TAM' Objects
IRT.itemfit.tam.mml.mfr | RMSD Item Fit Statistics for 'TAM' Objects
IRT.likelihood.tam | Extracting Individual Likelihood and Individual Posterior
IRT.likelihood.tam.latreg | Extracting Individual Likelihood and Individual Posterior
IRT.likelihood.tam.mml | Extracting Individual Likelihood and Individual Posterior
IRT.likelihood.tam.mml.3pl | Extracting Individual Likelihood and Individual Posterior
IRT.likelihood.tam.np | Extracting Individual Likelihood and Individual Posterior
IRT.likelihood.tamaan | Extracting Individual Likelihood and Individual Posterior
IRT.linearCFA | Linear Approximation of a Confirmatory Factor Analysis
IRT.modelfit.tam.mml | Model Fit Statistics in 'TAM'
IRT.modelfit.tam.mml.3pl | Model Fit Statistics in 'TAM'
IRT.modelfit.tamaan | Model Fit Statistics in 'TAM'
IRT.posterior.tam | Extracting Individual Likelihood and Individual Posterior
IRT.posterior.tam.latreg | Extracting Individual Likelihood and Individual Posterior
IRT.posterior.tam.mml | Extracting Individual Likelihood and Individual Posterior
IRT.posterior.tam.mml.3pl | Extracting Individual Likelihood and Individual Posterior
IRT.posterior.tam.np | Extracting Individual Likelihood and Individual Posterior
IRT.posterior.tamaan | Extracting Individual Likelihood and Individual Posterior
IRT.residuals | Residuals in an IRT Model
IRT.residuals.tam.jml | Residuals in an IRT Model
IRT.residuals.tam.mml | Residuals in an IRT Model
IRT.residuals.tam.mml.2pl | Residuals in an IRT Model
IRT.residuals.tam.mml.mfr | Residuals in an IRT Model
IRT.RISE | Utility Functions in 'TAM'
IRT.simulate | Simulating Item Response Models
IRT.simulate.tam.mml | Simulating Item Response Models
IRT.simulate.tam.mml.2pl | Simulating Item Response Models
IRT.simulate.tam.mml.3pl | Simulating Item Response Models
IRT.simulate.tam.mml.mfr | Simulating Item Response Models
IRT.threshold | Thurstonian Thresholds and Wright Map for Item Response Models
IRT.truescore | Converts a theta Score into a True Score tau ( theta)
IRT.WrightMap | Thurstonian Thresholds and Wright Map for Item Response Models
IRT.WrightMap.IRT.threshold | Thurstonian Thresholds and Wright Map for Item Response Models
IRT.WrightMap.tam.mml | Wright Map for Item Response Models by Using the 'WrightMap' Package
IRT.WrightMap.tamaan | Wright Map for Item Response Models by Using the 'WrightMap' Package
IRTLikelihood.cfa | Individual Likelihood for Confirmatory Factor Analysis
IRTLikelihood.ctt | Computes Individual Likelihood from Classical Test Theory Estimates

## -- L --

lavaanify.IRT | Slight Extension of the 'lavaan' Syntax, with Focus on Item Response Models
logLik.tam | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
logLik.tam.jml | Joint Maximum Likelihood Estimation
logLik.tam.latreg | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
logLik.tam.mml | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
logLik.tam.mml.3pl | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
logLik.tam.np | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
logLik.tamaan | Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value

## -- M --

msq.itemfit | Mean Squared Residual Based Item Fit Statistics (Infit, Outfit)
msq.itemfitWLE | Mean Squared Residual Based Item Fit Statistics (Infit, Outfit)

## -- P --

plot.IRT.informationCurves | Item and Test Information Curve
plot.tam | Plot Function for Unidimensional Item Response Models
plot.tam.jml | Plot Function for Unidimensional Item Response Models
plot.tam.mml | Plot Function for Unidimensional Item Response Models
plot.tam.pv.mcmc | Plausible Value Imputation
plotctt | Classical Test Theory Based Statistics and Plots
plotDevianceTAM | Deviance Plot for 'TAM' Objects
predict.tam.mml | Expected Values and Predicted Probabilities for Fitted 'TAM' Models
predict.tam.mml.3pl | Expected Values and Predicted Probabilities for Fitted 'TAM' Models
predict.tamaan | Expected Values and Predicted Probabilities for Fitted 'TAM' Models
print.designMatrices | Generation of Design Matrices
print.IRT.threshold | Thurstonian Thresholds and Wright Map for Item Response Models
print.tam | Test Analysis Modules: Marginal Maximum Likelihood Estimation
print.tam.latreg | Latent Regression Model
print.tam.linking | Linking of Fitted Unidimensional Item Response Models in 'TAM'
print.tam.mml | Test Analysis Modules: Marginal Maximum Likelihood Estimation
print.tam.mml.3pl | 3PL Structured Item Response Model in 'TAM'
print.tam.wle | Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
print.tamaan | Wrapper Function for 'TAM' Language
print.tam_linking_2studies | Linking of Fitted Unidimensional Item Response Models in 'TAM'
prior_list_include | Test Analysis Modules: Marginal Maximum Likelihood Estimation

## -- R --

require_namespace_msg | Utility Functions in 'TAM'
residuals.tam.jml | Residuals in an IRT Model
residuals.tam.mml | Residuals in an IRT Model
residuals.tam.mml.2pl | Residuals in an IRT Model
residuals.tam.mml.mfr | Residuals in an IRT Model
rownames.design | Generation of Design Matrices

## -- S --

Scale | S3 Method for Standardizations and Transformations of Variables
summary.IRT.linearCFA | Linear Approximation of a Confirmatory Factor Analysis
summary.IRT.modelfit.tam.mml | Model Fit Statistics in 'TAM'
summary.IRT.modelfit.tam.mml.3pl | Model Fit Statistics in 'TAM'
summary.IRT.modelfit.tamaan | Model Fit Statistics in 'TAM'
summary.msq.itemfit | Mean Squared Residual Based Item Fit Statistics (Infit, Outfit)
summary.msq.itemfitWLE | Mean Squared Residual Based Item Fit Statistics (Infit, Outfit)
summary.tam | Test Analysis Modules: Marginal Maximum Likelihood Estimation
summary.tam.fit | Item Infit and Outfit Statistic
summary.tam.jml | Joint Maximum Likelihood Estimation
summary.tam.latreg | Latent Regression Model
summary.tam.linking | Linking of Fitted Unidimensional Item Response Models in 'TAM'
summary.tam.mml | Test Analysis Modules: Marginal Maximum Likelihood Estimation
summary.tam.mml.3pl | 3PL Structured Item Response Model in 'TAM'
summary.tam.modelfit | Model Fit Statistics in 'TAM'
summary.tam.np | Unidimensional Non- and Semiparametric Item Response Model
summary.tam.pv.mcmc | Plausible Value Imputation
summary.tam.Q3 | Model Fit Statistics in 'TAM'
summary.tam.wle | Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
summary.tamaan | Wrapper Function for 'TAM' Language
summary.tam_linking_2studies | Linking of Fitted Unidimensional Item Response Models in 'TAM'

## -- T --

TAM | Test Analysis Modules
tam | Test Analysis Modules: Marginal Maximum Likelihood Estimation
TAM-defunct | Defunct 'TAM' Functions
TAM-utilities | Utility Functions in 'TAM'
tam.cb | Classical Test Theory Based Statistics and Plots
tam.ctt | Classical Test Theory Based Statistics and Plots
tam.ctt2 | Classical Test Theory Based Statistics and Plots
tam.ctt3 | Classical Test Theory Based Statistics and Plots
tam.fa | Bifactor Model and Exploratory Factor Analysis
tam.fit | Item Infit and Outfit Statistic
tam.jml | Joint Maximum Likelihood Estimation
tam.jml.fit | Item Infit and Outfit Statistic
tam.jml2 | Defunct 'TAM' Functions
tam.latreg | Latent Regression Model
tam.linking | Linking of Fitted Unidimensional Item Response Models in 'TAM'
tam.mml | Test Analysis Modules: Marginal Maximum Likelihood Estimation
tam.mml.2pl | Test Analysis Modules: Marginal Maximum Likelihood Estimation
tam.mml.3pl | 3PL Structured Item Response Model in 'TAM'
tam.mml.fit | Item Infit and Outfit Statistic
tam.mml.mfr | Test Analysis Modules: Marginal Maximum Likelihood Estimation
tam.mml.wle | Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
tam.mml.wle2 | Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
tam.modelfit | Model Fit Statistics in 'TAM'
tam.modelfit.args | Model Fit Statistics in 'TAM'
tam.modelfit.IRT | Model Fit Statistics in 'TAM'
tam.np | Unidimensional Non- and Semiparametric Item Response Model
tam.personfit | Person Outfit and Infit Statistics
tam.pv | Plausible Value Imputation
tam.pv.mcmc | Plausible Value Imputation
tam.Q3 | Model Fit Statistics in 'TAM'
tam.se | Standard Error Estimation
tam.threshold | Calculation of Thurstonian Thresholds
tam.wle | Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
tamaan | Wrapper Function for 'TAM' Language
tamaanify | Function for Parsing 'TAM' Input
tampv2datalist | Conversion of Plausible Value Object into Datalist
tam_01_pattern | Missing Data Patterns
tam_aggregate | Utility Functions in 'TAM'
tam_args_CALL_search | Utility Functions in 'TAM'
tam_assign_list_elements | Utility Functions in 'TAM'
tam_AXsi_compute | Utility Functions in 'TAM'
tam_AXsi_fit | Utility Functions in 'TAM'
tam_bayesian_bootstrap | Utility Functions in 'TAM'
tam_cor_wt | Utility Functions in 'TAM'
tam_cov_wt | Utility Functions in 'TAM'
tam_csink | Utility Functions in 'TAM'
tam_difference_quotient | Utility Functions in 'TAM'
tam_dmvnorm | Utility Functions in 'TAM'
tam_downcode | Downcoding an Item Response Dataset
tam_ginv | Utility Functions in 'TAM'
tam_ginv_scaled | Utility Functions in 'TAM'
tam_interval_index | Utility Functions in 'TAM'
tam_irf_3pl | Item Response Function for the 3PL Model
tam_jml_wle | Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
tam_latreg_se_quick | Standard Error Estimation
tam_linking_2studies | Linking of Fitted Unidimensional Item Response Models in 'TAM'
tam_matrix2 | Utility Functions in 'TAM'
tam_max_abs | Utility Functions in 'TAM'
tam_max_abs_list | Utility Functions in 'TAM'
tam_mml_se_quick | Standard Error Estimation
tam_model_implied_means | Utility Functions in 'TAM'
tam_NA_pattern | Missing Data Patterns
tam_normalize_matrix_rows | Utility Functions in 'TAM'
tam_normalize_vector | Utility Functions in 'TAM'
tam_osink | Utility Functions in 'TAM'
tam_outer | Utility Functions in 'TAM'
tam_packageinfo | Utility Functions in 'TAM'
tam_print_call | Utility Functions in 'TAM'
tam_remove_missings | Utility Functions in 'TAM'
tam_round_data_frame | Utility Functions in 'TAM'
tam_round_data_frame_print | Utility Functions in 'TAM'
tam_rowCumsums | Utility Functions in 'TAM'
tam_rsessinfo | Utility Functions in 'TAM'
tam_trim_increment | Utility Functions in 'TAM'

## -- W --

weighted_kurtosis | Descriptive Statistics for Weighted Data
weighted_mean | Descriptive Statistics for Weighted Data
weighted_quantile | Descriptive Statistics for Weighted Data
weighted_sd | Descriptive Statistics for Weighted Data
weighted_skewness | Descriptive Statistics for Weighted Data
weighted_Stats | Descriptive Statistics for Weighted Data
weighted_table | Descriptive Statistics for Weighted Data
weighted_var | Descriptive Statistics for Weighted Data
WLErel | Reliability Estimation in 'TAM'

## -- misc --

.A.matrix | Generation of Design Matrices
.A.PCM2 | Generation of Design Matrices
.A.PCM3 | Generation of Design Matrices