For the following entity-relationship diagram, the Student entity would have the foreign key.
Definitions:
Percentage Change
A mathematical calculation that indicates the degree of change over time, expressed as a percentage.
Price Elasticity
A gauge for the reaction of the amount of a good sought after to a price modification of that good.
Price Change
A variation in the cost of goods or services over time, which can be influenced by factors such as supply and demand.
Midpoint Method
A technique for calculating the percentage change in a variable, which averages the initial and final values to compute elasticity.
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