Should concerned that class is performing below average


The University of Wisconsin is concerned that one of its algebra classes is performing below average when compared to the rest of the students taking algebra at the university. The class has 15 students in it and has a mean average grade of 70. The mean average grade of everyone taking algebra at the school is 72 with a standard deviation of 3. Should we be concerned that our class is performing below average?

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Basic Statistics: Should concerned that class is performing below average
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