Of two personnel evaluation techniques available, the first requires a 2-hour test-interview while the second can be

Question:

Of two personnel evaluation techniques available, the first requires a 2-hour test-interview while the second can be completed in less than an hour. The scores for each of the eight individuals who took both tests are given in the next table.

a. Find the correlation coefficient, r, to describe the relationship between the two tests.
b. Would you be willing to use the second and quicker test rather than the longer test-interview to evaluate personnel? Explain.
For Information: Refer to Exercise 3.38.