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Fix the Zero df Model

Identification is a core component in SEM models and you should have at least one degree of freedom for any model. Using the text.model from the last exercise, update the model to create a degree of freedom.

You should label two of the coefficient paths to a to set them equal to each other. lavaan and the HolzingerSwineford1939 dataset have been loaded for you.

Diese Übung ist Teil des Kurses

Structural Equation Modeling with lavaan in R

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Anleitung zur Übung

  • Update the text.model to have x5 and x6 paths both set to a.
  • Analyze the model with the cfa() function.
  • View the updated model with the summary() function.

Interaktive Übung

Vervollständige den Beispielcode, um diese Übung erfolgreich abzuschließen.

# Update the model specification by setting two paths to the label a
text.model <- 'text =~ x4 + x5 + x6'

# Analyze the model
text.fit <- cfa(model = ___, data = HolzingerSwineford1939)

# Summarize the model
summary(___, standardized = TRUE, fit.measures = TRUE)
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