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Author Question: The inability to assign participants randomly to groups gives rise to which of the following ... (Read 138 times)

jwb375

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on: Aug 4, 2018
The inability to assign participants randomly to groups gives rise to which of the following confounding variables?
 
  A) diffusion of treatment
  B) selection
  C) attrition
  D) sequence effects

Question 2

Assume we are studying two groups. One group is scheduled on Wednesday morning and another on Wednesday afternoon. Participants are selected on availability. The confounding variable in this study is
 
  A) selection.
  B) attrition.
  C) testing.
  D) instrumentation.


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mistyjohnson

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

Answer: B

Answer to Question 2

Answer: A


jwb375

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Reply #2 on: Aug 4, 2018
Thank you!


mistyjohnson

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Reply #3 on: Aug 4, 2018
Always glad to help...


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