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The mean of 9, 11, 13, , 11, 13, 15, 13 is 12. What is the mode of the data?

Competition practiceStatistics
  • A13 only
  • B11 and 13
  • C11 only
  • D12

Step-by-Step Solution

. Now 11 and 13 each occur 3 times, so the data is bimodal: 11 and 13.
Answer: B) 11 and 13

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