Answer :
The experimental designs demonstrate that the independent variable is related to the outcome, whereas the quasi-experimental design allows for independent variables which stand alone.
In order to evaluate the effect of an intervention, an experimental design is used. Here the participants are randomly divided into 2 groups- A treatment group and a control or comparison group.
On the other hand, a quasi-experimental design is a non-randomized study design used in order to evaluate the effect of an intervention. Thus, the intervention can be a training program, a policy change or a medical treatment.
Hence, experimental design and quasi-experimental design have their own differentiation.
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