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Author Question: Extraneous variation generally A) reduces internal validity. B) enhances internal validity. C) ... (Read 49 times)

misspop

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on: Aug 4, 2018
Extraneous variation generally
 
  A) reduces internal validity.
  B) enhances internal validity.
  C) has no effect on internal validity.
  D) affects internal validity only when there are more than two levels of the independent variable.

Question 2

An experimenter hopes to find that the predicted variation
 
  A) leads to accepting the null hypothesis.
  B) reduces the difference between-groups.
  C) increases the within-groups variation.
  D) is due to the experimental manipulation.


karlss

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Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: D


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