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For these data, what is the three-period centered moving average for period 4?
Tariff
A tariff is a tax imposed by a government on imported or exported goods, often used to protect domestic industries or to generate revenue.
Trade
The exchange of goods, services, or both, between parties, either within an economy or between economies.
Price
The amount of money expected, required, or given in payment for something, reflecting its value, cost of production, and market demand.
Produced
The act of creating, manufacturing, or bringing into existence goods and services.
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