Free ACT Practice Question

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ID: ACT-M-114
Section: Math
Topics: Statistics & Probability; Statistics
Difficulty level: Medium

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If one of $P$ and $Q$ is a positive number and the other is a negative number, which of the following could be the standard deviation of the set $\{P, -12, -8, -4, 0, 4, 8, Q\}$?

  1. $-4$
  2. $-2$
  3. $0$
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