12.7 Eight students are given examinations on each of verbal reasoning, quantitative reasoning, and logic. The scores range from 0 to 100, with 100 a perfect score. Use the data below of find the Kendall partial tau coefficient between quantitative and logic when the effect of verbal is removed. Find the P value. Compare the result to the P value for quantitative and logic alone and interpret the comparison.

Student Score 1 2 3 4 5 6 7 8 Verbal 90 60 45 48 58 72 25 85 Quantitative 62 81 92 76 70 75 95 72 Logic 60 91 85 81 90 76 93 80