Time series designs:
A) Are useful when there is no control group
B) Should only be used when groups can be randomly assigned to treatments
C) Require at least one measure before and after an intervention
D) a and b

Question

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The Answer of Time series designs:
A) Are useful when there is no control group
B) Should only be used when groups can be randomly assigned to treatments
C) Require at least one measure before and after an intervention
D) a and b

Time Series Designs