A Pearson Product-Moment Correlation Coefficient Can Be Used to Express

Multiple Choice

A Pearson product-moment correlation coefficient can be used to express the degree of relationship for which situation(s) below?

A) A little anxiety produces poor results, a moderate amount produces good results, and a high level of anxiety produces poor results.
B) Early in training each trial helps only a little, but as training progresses, each trial causes a larger and larger gain.
C) For every extra year of growth in a pine forest, you can expect an increase of 10,000 board feet.
D) All of the other alternatives are correct.