Bai Is Conducting a Study on Learning

question 126

Multiple Choice

Bai is conducting a study on learning.When she manipulates an independent variable,it is possible that some other factor,such as noise in the hall,can affect learning in one of the groups but not in the other.This possibility reflects the presence of:

• A) a confound
• B) a dependent variable
• C) selection bias
• D) random assignment

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