14. Student Ratings A school principal suspected that a teacher’s attitude toward a student was based on the student’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

a. Calculate rs for these teacher-IQ ranks.

b. Do the data provide sufficient evidence to indicate a positive correlation between the teacher’s ranks and the ranks of the IQs? Use a 5.05.

Transcribed Image Text:

Rank 1 2 3 4 5 6 7 8 9 IQ 3 1 2 4 5 7 9 6 8