A control group provides a baseline for comparison with a treatmentgroup.
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Q6: Clusters are non-overlapping subgroups of a population
Q10: If the sample size is small relative
Q11: In a well-designed experiment the treatments are
Q12: Variables are extraneous if their effects on
Q12: Random subpopulations of a population are called
Q13: Blocking is used to filter out the
Q17: Random assignment of volunteers to treatments will,
Q18: A simple random sample of size n
Q19: The method of control wherein an extraneous
Q20: Selection bias occurs if only volunteers are
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