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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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daniellemaslon daniellemaslon
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6 years ago
The classical experimental design
 
  a. helps guard against the sources of internal and external validity.
  b. helps guard against the sources of external invalidity.
  c. helps guard against the sources of internal invalidity.
  d. cannot guard against the sources of either internal or external invalidity.
  e. what it helps guard against depends upon the particular experiment.
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KomallKomall
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6 years ago
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6 years ago
You are the best
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