The major advantage of the Random Sample design is 1.. Its major disadvantage is

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The major advantage of the Random Sample design is 1.. Its major disadvantage is 2.. Random assignment to treatment and control conditions creates equivalent groups on the outcome variable, Subtracting the outcomes for treatment and control creates a new distribution of differences that may be hard to model. The Random Sample design is simple, and many statistical tests require it, Because it is simple, it isn't as powerful as other designs that take into account pre-existing differences in experimental groups We are assured that the treatment and control groups are the same because we accounted for all differences in sampling, After treatment, the two groups differ by systematic factors, not random factors Ability to assume that the treatment and control groups are functionally equivalent mathematically, It is often impractical to randomly assign experimental units to control versus treatment conditions.

Explanation / Answer

1. B1 2. B2

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