CDC                     BMI growth curves from age 2 to 25
bestModel               Retrieve the best fitting regression model
                        based on powers of A, L and interactions
boxcox                  Generate box cox power function for regression
                        model at specific age
cNORM                   cNORM: Continuous Norming
cNORM.GUI               Launcher for the graphical user interface of
                        cNORM
calcPolyInL             Internal function for retrieving regression
                        function coefficients at specific age
calcPolyInLBase         Internal function for retrieving regression
                        function coefficients at specific age
checkConsistency        Check the consistency of the norm data model
cnorm.cv                Cross validation for term selection
computePowers           Compute powers of the explanatory variable a as
                        well as of the person location l (data
                        preparation)
derivationTable         Create a table based on first order derivative
                        of the regression model for specific age
derive                  Derivative of regression model
elfe                    Sentence completion test from ELFE 1-6
epm                     Simulated dataset (Educational and
                        Psychological Measurement, EPM)
getNormCurve            Computes the curve for a specific T value
life                    Life expectancy at birth from 1960 to 2017
mortality               Mortality of infants per 1000 life birth from
                        1960 to 2017
normTable               Create a norm table based on model for specific
                        age
plotBoxCox              Plot regression model versus box cox for a
                        specific age
plotDensity             Plot the density function per group by raw
                        score
plotDerivative          Plot first order derivative of regression model
plotNorm                Plot manifest and fitted norm scores
plotNormCurves          Plot norm curves
plotPercentileSeries    Generates a series of plots with number curves
                        by percentile for different models
plotPercentiles         Plot norm curves against actual percentiles
plotRaw                 Plot manifest and fitted raw scores
plotSubset              Evaluate information criteria for regression
                        model
ppvt                    Vocabulary development from 4 to 16
predictNorm             Retrieve norm value for raw score at a specific
                        age
predictNormBC           Calculate the norm value for a given raw value
                        based on the parametric box cox distribution
predictRaw              Predict single raw value
predictRawBC            Calculate the raw score for a given percentile
                        based on the parametric box cox distribution
prepareData             Prepare data for modeling in one step
                        (convenience method)
printSubset             Convenience method for printing model selection
                        information
rangeCheck              Check for horizontal and vertical extrapolation
rankByGroup             Determine the norm scores of the participants
                        in each subsample
rankBySlidingWindow     Determine the norm scores of the participants
                        by sliding window (experimental)
rawTable                Create a table with norm scores assigned to raw
                        scores for a specific age based on the
                        regression model
regressionFunction      Regression function
simMean                 Simulate mean per age
simSD                   Simulate sd per age
simulateRasch           Simulate raw test scores based on Rasch model
