Package index

Data Generators

lfast()

Synthesise rating-scale data with predefined mean and standard deviation

lcor()

Rearrange elements in each column of a data-frame to fit a predefined correlation matrix

makeScales()

Synthesise rating-scale data with given first and second moments and a predefined correlation matrix

correlateScales()

Dataframe of correlated scales from different dataframes of scale items

makeItemsScale()

Generate item-level Likert responses from a summated scale, with desired Cronbach's Alpha

makePaired()

Synthesise a dataset from paired-sample t-test summary statistics

makeRepeated()

Reproduce Repeated-Measures Data from ANOVA Summary Statistics

makeScalesRegression()

Generate Data from Multiple-Regression Summary Statistics

Correlation matrices

makeCorrAlpha()

Correlation matrix from Cronbach's Alpha

makeCorrLoadings()

Generate Inter-Item Correlation Matrix from Factor Loadings

Analysis & diagnostics

alpha()

Calculate Cronbach's Alpha from a correlation matrix or dataframe

eigenvalues()

calculate eigenvalues of a correlation matrix with optional scree plot

reliability()

Estimate scale reliability for Likert and rating-scale data

alpha_sensitivity()

Sensitivity of Cronbach's alpha to scale design parameters

ordinal_diagnostics()

Extract ordinal diagnostics from a reliability() result

Deprecated functions

lexact()

Deprecated. Use lfast() instead

Internal

print(<likert_reliability>)

Print method for reliability objects

print(<makeScalesRegression>)

Print method for makeScalesRegression objects