If two sets of test scores indicate that Score-Set X has a standard deviation of 10.2, while Score-Set Y, on the same test, has a standard deviation of 8.4, what does this signify?
A. None of the above
C. The performances of the X students were more variable than those of the Y students.
B. The scores of the Y students were more spread out than those of the X students.
D. Students in the Score-Set X outperformed their Score-Set Y counterparts.
Answer: C. The performances of the X students were more variable than those of the Y students.
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