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reeko reeko
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Posts: 671
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6 years ago
When is a study internally valid?
 
  A) Alternative explanations of the results can be ruled out.
  B) An experimental design was used.
  C) A repeated measures design was used.
  D) Precision has been maximized.
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wrote...
6 years ago
A
reeko Author
wrote...
6 years ago
Now I'm convinced to ask more questions Slight Smile
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