(Solution) - A school principal suspected that a teacher s attitude toward a -(2025 Original AI-Free Solution)

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A school principal suspected that a teacher's attitude toward a first-grader
depended on his original judgment of the child's ability. The principal also suspected that much of that judgment was based on the first-grader's IQ score, which was usually known to the teacher. After three weeks of teaching, a teacher was asked to rank the nine children in his class from 1 (highest) to 9 (lowest) as to his opinion of their ability. Calculate rs for these teacher-IQ ranks: