Association is not a sufficient criterion on its own for establishing a causal effect.
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Q17: When random assignment is not possible, a(n)
Q18: To determine whether community resource centers were
Q19: The concrete individual sequence of events, thoughts
Q20: A technique used in nonexperimental research to
Q21: In an experiment, the group of subjects
Q23: Sample generalizability exists when _.
A) data for
Q24: Endogenous change occurs when _.
A) the groups
Q25: Random assignment (randomization) helps ensure that the
Q26: In a _ design, a comparison group
Q27: The simplest type of before-and-after design is
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