a. A teacher of a low-level reading group is interested in what the average score is for the group of 25 students.
b. An administrator wants to find out if there is a relationship between teacher absences and student achievement.
c. A math teacher wants to know how many ability groups should be formed within a class of 30 students.
d. A student teacher is interested in finding out the number of students who rate his performance as good, excellent, average, or poor.
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