17. An experimenter...
 
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17. An experimenter conducts an experiment on the effects of a drug to control hallucinations. He declares the results to be "statistically significant," which usually means that

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(@aamir)
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An experimenter conducts an experiment on the effects of a drug to control hallucinations. He declares the results to be "statistically significant," which usually means that

  1. even though appropriate statistics were used, no differences could be detected between experimental and control groups.
  2. the results have important implications for theory or practice.
  3. differences between experimental and control groups of this size occur by chance only 5 times out of 100 (or less).
  4. differences between experimental and control groups were so large they could never occur by chance alone.

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3. differences between experimental and control groups of this size occur by chance only 5 times out of 100 (or less).

 
Posted : 16/10/2022 8:10 am
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