Input-output models are quantitative economic models that represent the relationships between different sectors of an economy by showing how the output of one industry serves as an input to another. These models help in analyzing the interdependencies within the economy, especially in understanding how changes in one sector can affect others. This is particularly significant for examining the economic impact of tourism, as it illustrates how tourism-related expenditures ripple through various sectors such as transportation, hospitality, and retail.
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