Quasi-experimental designs are useful because they can be used in cases when true experimentation cannot,and because they are quicker and less expensive.

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Quasi-experimental designs, which involve manipulating an independent variable but lack random assignment to groups, can be used when true experimentation (random assignment to groups) is not possible or ethical. They are often quicker and less expensive than true experiments, making them a practical option in certain research scenarios.

Quasi-Experimental Designs Are Useful Because They Can Be Used in Cases