In research studies, when you execute scientific experiments, you always have the independent and dependent variables. Dependent variables are the parameters you want to measure or investigate. Independent variable, on the other hand, are parameters or events that you control or set. In this case, the dependent variable is the amount of collisions made by the two groups.
Answer:
A market economy is an economic system in which economic decisions and the pricing of goods and services are guided by the interactions of a country's individual citizens and businesses
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