After Controlling for Z,the Partial Correlation Coefficient Is

question 7

Multiple Choice

After controlling for Z,the partial correlation coefficient is .78.The bivariate Pearson's r between X and Y was only .51.Which interpretation is consistent with these results?

• A)None,these results are mathematically impossible.
• B)There is a spurious relationship between X and Y.
• C)X and Z are both caused by Y.
• D)X and Z are separate,uncorrelated causes of Y.