The one central reason that a political opinion poll can reflect the opinion of the whole population is because a) it has a margin of error b) it is randomly spurious c) it is random d) it has been tested on focus groups e) it is an abnormal distribution

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The one central reason that a political opinion poll can reflect the opinion of the whole population is because

  1. a) it has a margin of error
  2. b) it is randomly spurious
  3. c) it is random
  4. d) it has been tested on focus groups
  5. e) it is an abnormal distribution
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