What is the relationship between a first-order and a zero-order correlation? A) The first-order correlation is based on the zero-order correlation but modifies the original bivariate association to account for a third variable. B) The first-order correlation is the bivariate correlation between X₁ and Y, and the zero-order correlation is the bivariate correlation between X₁ and X₂. C) The first-order correlation is the bivariate correlation between X₁ and X₂, and the zero-order correlation is the bivariate correlation between X₂ and Y. D) Both are synonyms for the same thing.

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The first-order correlation adjusts the zero-order correlation by controlling for the influence of a third variable, providing a more refined understanding of the relationship between the primary variables.

What Is the Relationship Between a First-Order and a Zero-Order