A given that the authors calculated correlation

a. Given that the authors calculated correlation coefficients, what kind of variables are
depression, anxiety, and externalizing? Explain your answer.
b. What is the correlation coefficient for the association between depression and anxiety? Explain
what this correlation coefficient tells us about the relation between these variables. b. What is the correlation coefficient for the association between anxiety and externalizing?
Explain what this correlation coefficient tells us about the relation between these
variables.
c. The partial correlation of anxiety and externalizing is 0.17, controlling for the variable of
depression. How is this different from the original Pearson correlation coefficient
between these two variables?
d. Why is the partial correlation coefficient different from the original Pearson correlation
coefficient between these two variables?
.
e. What did we learn by calculating a partial correlation?
f. Why can we not draw causal conclusions with respect to these findings?