Clusters are non-overlapping subgroups of a population that have been identified as homogeneous.
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Q1: Random assignment to treatments will guarantee groups
Q2: In a well-designed experiment, the factors are
Q3: A treatment is any particular combination of
Q4: As long as the sample size is
Q5: Increasing sample size will generally eliminate bias
Q7: Blocking is a technique that can be
Q8: A study is an observational study if
Q9: A control group provides a baseline for
Q10: Stratified sampling is a sampling method that
Q11: Selection bias can occur if volunteers only
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