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Randomization
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57.
Benefit of Random Assignment
easy
What is the primary statistical benefit of random assignment in an experiment?
A
It guarantees equal sample sizes in treatment and control groups for maximum statistical power
B
It ensures the outcome metric is normally distributed in both groups, validating parametric tests
C
It eliminates measurement error by preventing experimenter bias during data collection
D
It balances observed and unobserved confounders across groups in expectation, enabling causal inference
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