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:

Transcribed Image Text:

Rank 2 3 4 5 67 8 9 I0