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Diana55 Diana55
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7 years ago
History is a threat to internal validity that is related to problems associated with ________.
A) a pretest survey
B) the researcher
C) the sample
D) variation in data collection procedures
E) the study context
Textbook 
Advertising Research: Theory and Practice

Advertising Research: Theory and Practice


Edition: 2nd
Author:
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6l46l4
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7 years ago
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Diana55 Author
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#2
7 years ago
I had been looking for this, really helped me out
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