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Lambda4 (version 3.0)

Collection of Internal Consistency Reliability Coefficients.

Description

Currently the package includes 14 methods for calculating internal consistency reliability but is still growing. The package allows users access to whichever reliability estimator is deemed most appropriate for their situation.

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Version

Install

install.packages('Lambda4')

Monthly Downloads

70

Version

3.0

License

GPL-2

Maintainer

Last Published

July 30th, 2013

Functions in Lambda4 (3.0)

angoff

Compute Angoff Coefficient
cong1f

One-Factor Congeneric Covariance Matrix
bin.combs

Generate Unique Binary Combinations
kristof

Compute Kristof Coefficient
cov.lambda4

Compute Covariance Maximized Lambda4
cong3f

Three-Factor Congeneric Covariance Matrix
impute.cov

Compute Covariance Matrix
Feldt1989

Feldt's Numerical Example With 4 Items
guttman

Guttman's 6 Lambda Coefficients
cong5f

Five-Factor Congeneric Covariance Matrix
lambda2

Compute Guttman's Lambda 2 Coefficient
par5f

Five-Factor Parallel Covariance Matrix
par1f

One Factor Parallel Covariance Matrix
par3f

Three-Factor Parallel Covariance Matrix
lambda5

Compute Guttman's Lambda 5 Coefficient
user.lambda4

Compute User Specified Lambda 4 (Split-Half)
Rosenberg

Rosenberg Self-Esteem
tau1f

One-Factor Tau-Equivalent Covariance Matrix
omega.tot

Compute McDonald's Omega Total
lambda3

Compute Guttman's Lambda 3 Coefficient (Coefficent Alpha)
lambda6

Compute Guttman's Lambda 6 Coefficient
Lambda4

Collection of Internal Consistency Reliability Coefficients.
lambda1

Compute Guttman's Lambda 1 Coefficient
tau3f

Three-Factor Tau-Equivalent Covariance Matrix
Warner1960

Warner 1960 Social Class Data
raju

Compute Raju Coefficient
quant.lambda4

Compute Quantile Lambda 4
WAIS1955

Wechsler Adult Intellegence Scale (1955)
tau5f

Five-Factor Tau-Equivalent Covariance Matrix
TenBerge2004

De Leeuw (1983) Political Survey Items