What is the class midpoint for the $45 up to $55 class? 
Definitions:
Post Hoc, Ergo Propter Hoc
A logical fallacy that assumes a cause-and-effect relationship merely because one event followed another.
Unemployment Rate
The fraction of the workforce that is without a job and is actively searching for one.
Economic Model
A simplified framework designed to illustrate complex processes, frequently using mathematical techniques to analyze economic decisions and their impacts.
Inductive Reasoning
A method of reasoning that involves moving from specific observations to broader generalizations and theories.
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