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Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section: Refer to Exhibit 2-5.Suppose the data is grouped into 5 classes,and one of them will be "30 up to 44"-that is,{x;30 ≤ x < 44}.The frequency of this class is ____.
Households
Economic units comprising individuals living together, making joint decisions about consumption and production.
Firms
Business entities or organizations engaged in commercial, industrial, or professional activities, either for profit or non-profit.
Market
Any structure that allows buyers and sellers to exchange types of goods, services, and information.
Factor Market
This refers to markets where services of the factors of production (not the actual products) such as labor, capital, and land are bought and sold.
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