Define appropriate quantities for descriptive modeling.
Identify independent and dependent quantities in a context
Problem
In this situation, identify the independent quantity and the dependent quantity: A taxi fare depends on the number of miles traveled.
Big Picture
What this problem is really about
Use the sentence’s dependency language to draw a one-way arrow: the quantity recorded or set first points toward the quantity that changes in response. The first is the independent input and the responding quantity is the dependent output; attaching each unit helps confirm that the roles match the context.
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