Answer
The data set will be positively skewed as students are expected to obtain less marks in a difficult test so mean will be greater than the median.
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Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 2 - Methods for Describing Sets of Data - Exercises 2.48 - 2.70 - Applying the Concepts - Intermediate - Page 59: 2.66c
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