cNORM-package |
cNORM: Continuous Norming |
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 |
calcPolyInL |
Internal function for retrieving regression function coefficients at specific age |
CDC |
BMI growth curves from age 2 to 25 |
checkConsistency |
Check the consistency of the norm data model |
cNORM |
cNORM: Continuous Norming |
cnorm.cv |
Cross validation for term selection |
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) |
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 |
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 |
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 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 modelling 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 |