alleryScores 7, 7, 9, 12 and 12 are recorded. What is the mode?
AJust the 7
BJust the 12
CBoth 7 and 12
DJust the 9
Answer & Solution
Correct answer: C. Both 7 and 12
1. Count each score: 7 twice, 9 once, 12 twice.
2. Two scores share the highest count of 2.
3. So both 7 and 12 are modes and the mode is not unique.
Choosing just 7 or just 12 ignores the tie, and 9 appears only once.
_Source: Wikipedia, Mode (statistics), lead section_
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