Lambda4 (version 3.0)

guttman: Guttman's 6 Lambda Coefficients

Description

Calculates all 6 of Guttman's lambda coefficients.

Usage

guttman(x, missing = "complete", standardize = FALSE)

Arguments

x

Can be either a data matrix or a covariance matrix

missing

How to handle missing values.

standardize

When TRUE Results are standardized by using the correlation matrix instead of the covariance matrix for computation.

Value

Lambda1

Guttman's Lambda1 estimate of reliability.

Lambda2

Guttman's Lambda2 estimate of reliability.

Lambda3

Guttman's Lambda3 estimate of reliability. Also known as Cronbach's alpha or coefficient alpha.

Lambda4

Guttman's maximimal Lambda4 estimate of reliability.

Lambda5

Guttman's Lambda5 estimate of reliability.

Lambda6

Guttman's Lambda6 estimate of reliability.

References

Guttman L (1945). "A Basis for Analyzing Test-Retest Reliability." Psychometrika, 10, 255-282.

Examples

guttman(Rosenberg)