English: Representation of the relationship between two traits. Left: No trait covariation. Each trait changes independently of the other. Right: Trait covariation causes a positive correlation between traits. Increase in one trait is correlated with an increase in the other trait. The red line within the ellipse represents the main eigenvector of the variance-covariance matrix.
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{{Information |description ={{en|1=Representation of the relationship between two traits. Left: No trait covariation. Each trait changes independently of the other. Right: Trait covariation causes a positive correlation between traits. Increase in one trait is correlated with an increase in the other trait. The red line within the ellipse represents the main eigenvector of the variance-covariance matrix.}} |date =2017-11-17 |source ={{own}} |author =[[User:Santiagoha1...