A study was conducted in which the teachers were asked to rate students for a
particular trait on a ten point scale. With the help of data given below find out whether
significant difference exists in the rating of the students by the teachers.
Teachers Students
A B C D E F G
X 7 3 7 1 5 5 5
Y 5 5 9 4 3 5 4
Z 6 3 7 1 3 5 3
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