cfa_dat_heywood: Sample Data: A CFA Model with a Heywood Case

In semfindr: Influential Cases in Structural Equation Modeling

Sample Data: A CFA Model with a Heywood Case

Description

A six-variable dataset with 60 cases, with one case resulting in negative variance if not removed.

Usage

cfa_dat_heywood

Format

A data frame with 60 rows and 6 variables:

x1

Indicator. Numeric.

x2

Indicator. Numeric.

x3

Indicator. Numeric.

x4

Indicator. Numeric.

x5

Indicator. Numeric.

x6

Indicator. Numeric.

Examples

library(lavaan)
data(cfa_dat_heywood)
mod <-
"
f1 =~  x1 + x2 + x3
f2 =~  x4 + x5 + x6
"
# The following will result in a warning
fit <- cfa(mod, cfa_dat_heywood)
# One variance is negative
parameterEstimates(fit, output = "text")
# Fit the model with the first case removed
fit_no_case_1 <- cfa(mod, cfa_dat_heywood[-1, ])
# Results admissible
parameterEstimates(fit_no_case_1, output = "text")

semfindr documentation built on April 3, 2025, 5:58 p.m.