ggm (version 2.5)

anger: Anger data

Description

Anger data

Usage

data(anger)

Format

A covariance matrix for 4 variables measured on 684 female students.

X

anxiety state

Y

anger state

Z

anxiety trait

U

anger trait

Details

Trait variables are viewed as stable personality characteristics, and state variables denote behaviour in specific situations. See Cox and Wermuth (1996).

References

Cox, D. R. and Wermuth, N. (1996). Multivariate dependencies. London: Chapman and Hall.

Cox, D.R. and Wermuth, N. (1990). An approximation to maximum likelihood estimates in reduced models. 77(4), 747-761.

Examples

# Fit a chordless 4-cycle model 
data(anger) 
G = UG(~ Y*X + X*Z + Z*U + U*Y)
fitConGraph(G,anger, 684)