Part correlation is also known as which of the following?

Part correlation is also known as which of the following?

• A. Another name for a semi-partial correlation.
• B. A measure of the relationship between two variables while controlling for other variables.
• C. A correlation between two variables after removing measurement error.
• D. A correlation computed from paired data only.

Answer: (A)

Part correlation is another name for semi-partial correlation. It measures the unique association between the dependent variable and one predictor after removing from that predictor the variance it shares with the other predictors. In practice, you regress the predictor on the other predictors to obtain residuals, then correlate those residuals with the dependent variable. This residual-based correlation captures only the portion of the predictor’s relationship with the outcome that is not explained by the other predictors, highlighting the predictor’s unique contribution. This differs from partial correlation, which controls for the other variables in both variables, not just the predictor. The other statements describe different ideas and do not match how part (semi-partial) correlation is defined.

Part correlation is another name for semi-partial correlation. It measures the unique association between the dependent variable and one predictor after removing from that predictor the variance it shares with the other predictors. In practice, you regress the predictor on the other predictors to obtain residuals, then correlate those residuals with the dependent variable. This residual-based correlation captures only the portion of the predictor’s relationship with the outcome that is not explained by the other predictors, highlighting the predictor’s unique contribution. This differs from partial correlation, which controls for the other variables in both variables, not just the predictor. The other statements describe different ideas and do not match how part (semi-partial) correlation is defined.