Continuous Norming

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Documentation for package ‘cNORM’ version 3.1.0

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

Help Pages

bestModel	Best-fitting Regression Model Based on Powers and Interactions
betaByGroup	Estimate Beta-Binomial Parameters by Group
betaCoefficients	Compute Parameters of a Beta Binomial Distribution
betaContinuous	Continuous Norming with Beta-Binomial Distribution (experimental)
betaNormTable	Generate norm table from parametric continuous norming with Beta-Binomial Parameters
betaTable	Calculate Cumulative Probabilities, Density, Percentiles, and Z-Scores for Beta-Binomial Distribution
buildFunction	Build regression function for bestModel
calcPolyInL	Internal function for retrieving regression function coefficients at specific age
calcPolyInLBase	Internal function for retrieving regression function coefficients at specific age
calcPolyInLBase2	Internal function for retrieving regression function coefficients at specific age (optimized)
CDC	BMI growth curves from age 2 to 25
checkConsistency	Check the consistency of the norm data model
checkWeights	Check, if NA or values <= 0 occur and issue warning
cnorm	Continuous Norming
cnorm.cv	Cross-validation for Term Selection in cNORM
cNORM.GUI	Launcher for the graphical user interface of cNORM
computePowers	Compute powers of the explanatory variable a as well as of the person location l (data preparation)
computeWeights	Weighting of cases through iterative proportional fitting (Raking)
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)
getGroups	Determine groups and group means
getNormCurve	Computes the curve for a specific T value
getNormScoreSE	Calculates the standard error (SE) or root mean square error (RMSE) of the norm scores In case of large datasets, both results should be almost identical
life	Life expectancy at birth from 1960 to 2017
modelSummary	Prints the results and regression function of a cnorm model
mortality	Mortality of infants per 1000 life birth from 1960 to 2017
normTable	Create a norm table based on model for specific age
plot.cnorm	S3 function for plotting cnorm objects
plotCnorm	General convencience plotting function
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
plotPercentiles	Plot norm curves against actual percentiles
plotPercentileSeries	Generates a series of plots with number curves by percentile for different models
plotRaw	Plot manifest and fitted raw scores
plotSubset	Evaluate information criteria for regression model
ppvt	Vocabulary development from 2.5 to 17
predictBeta	Predicts beta coefficients in dependence of age
predictNorm	Retrieve norm value for raw score at a specific age
predictRaw	Predict single raw value
prepareData	Prepare data for modeling in one step (convenience method)
prettyPrint	Format raw and norm tables The function takes a raw or norm table, condenses intervals at the bottom and top and round the numbers to meaningful interval.
print.cnorm	S3 method for printing model selection information
printSubset	Print 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
standardizeRakingWeights	Function for standardizing raking weights Raking weights get divided by the smallest weight. Thereby, all weights become larger or equal to 1 without changing the ratio of the weights to each other.
summary.cnorm	S3 method for printing the results and regression function of a cnorm model
weighted.quantile	Weighted quantile estimator
weighted.quantile.harrell.davis	Weighted Harrell-Davis quantile estimator
weighted.quantile.inflation	Weighted quantile estimator through case inflation
weighted.quantile.type7	Weighted type7 quantile estimator
weighted.rank	Weighted rank estimation