A teacher from the College of Business Administration of UPang 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 1st Test 2nd Test 75 79 80 81 81 80 79 82 75 78 76 75 88 86 86 90 82 85 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 here. Student 1 234 2 4 5 6 7 8 9 10 How reliable is her examination?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
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2. A teacher from the College of Business Administration of UPang 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
2nd Test
79
81
80
82
78
75
86
90
85
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 here.
Student
1
2
3
4
5
6
7
8
9
10
How reliable is her examination?
1st Test
75
80
81
79
75
76
88
86
82
84
Transcribed Image Text:2. A teacher from the College of Business Administration of UPang 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 2nd Test 79 81 80 82 78 75 86 90 85 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 here. Student 1 2 3 4 5 6 7 8 9 10 How reliable is her examination? 1st Test 75 80 81 79 75 76 88 86 82 84
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