A statistics student asked seven first-year economics students to report their grades in the required mathematics and

Question:

A statistics student asked seven first-year economics students to report their grades in the required mathematics and economics courses. The results (where 1 = F, 2 = D, 3 = C, 4 = B, 5 = A) are as follows:

Calculate the Spearman rank correlation coefficient, and test to determine whether we can infer that a relationship exists between the grades in the two courses. (Use Î± = .05.)