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A researcher theorizes that the dramatic increase in the popularity of the personal computer was ...

A researcher theorizes that the dramatic increase in the popularity of the personal computer was caused by the increased use of e-mail. Which of the conditions required to establish cause and effect has the researcher violated?
A) There must be a systematic statistical link between the variables.
B) The independent variable must precede the dependent variable in time.
C) There is no hypothesis.
D) The possibility of a spurious relationship must be eliminated.
E) There must be a logical link between the variables that explains why the two are related.

Textbook

Core Concepts in Sociology, Canadian Edition

Edition: 2^nd

Authors: Lindsey, Beach, Ravelli

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