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  3. Study Set
    Evaluate Research in Education
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    Exam 9: Internal Validity
  5. Question
    Matching -Mortality Threat
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Matching -Mortality Threat

Question 19

Question 19

Multiple Choice

Matching
-Mortality threat


A) Age, gender, and class
B) Unreturned surveys
C) Classrooms with fewer resources
D) A fatigued researcher scoring data
E) An earthquake

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