A teacher from the College of Business Administration of Pacific University is using the Test-Retest Method to check the reliability of her examination. She administered the exam to his students during the 1st week of the semester. After 4 weeks of using an online teaching modality, she again administered the same exam. The achievement test results of 10 randomly selected students were tallied, as shown below. Scores Scores Student 1st Test 2nd Test 1 75 79 2 80 81 3 81 80 4 79 82 5 75 78 6 76 75 7 88 86 8 86 90 9 82 85 10 84 87 The coefficient of reliability of her examination will be determined after she measures the degree of relationship of the 1st and 2nd tests, using the Spearman Rank-Order Correlation Coefficient, rho, rs. What is the reliability of her examination? Show your complete solution.

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