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The Test Scores for a Statistics course are given in the Excel below.

The data (X1, X2, X3, X4) are for each student.

X1 = score on exam #1

X2 = score on exam #2

X3 = score on exam #3

X4 = score on final exam

Your professor wants to know if all tests are created equal.

Looking at the Summary output, which two Exams have the biggest difference in average?


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