In some research, the researchers are not able to use random assignment to divide participants among groups. instead, they compare preexisting groups. what type of research is this?

Quasi-Experimental Design

Explanation:

According to my research on various research methodology, I can say that based on the information provided within the question the type of study being conducted is called a Quasi-Experimental Design. Like mentioned in the question, this is a type of study that is used to estimate the casual impact of intervening on a targeted group of individuals without random assignment.

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2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

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5. an increase in prices

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