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Treating the data as a whole population, what is the standard deviation of 2, 4, 4, 4, 5, 5, 7, 9?
- A1.5
- B2
- C2.5
- D4
Correct answer: B
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Treating the data as a whole population, what is the standard deviation of 2, 4, 4, 4, 5, 5, 7, 9?