The scores of 8 students on the midterm exam and final exam were as follows. Student Midterm Final Anderson 96 87 Bailey 92 88 Cruz 85 97 DeSana 84 86 Erickson 72 100 Francis 71 96 Gray 71 81 Harris 70 76 Find the value of the (Spearman's) rank correlation coefficient test statistic that would be used to test the claim of no correlation between midterm score and final exam score. Round your answer to 3 places after the decimal point, if necessary. Test statistic: Is =