Daily Hoagie Sales
The table below shows the number of hoagies sold daily during a four-week period at Hoagie Haven in Sutton,West Virginia. 
-{Daily Hoagie Sales Narrative} Use regression analysis to find the linear trend line.
Definitions:
Perceptual Set
A mental predisposition or readiness to perceive certain aspects of available sensory data and ignore others.
Mental Predisposition
An individual's inclination or tendency to think, feel, or behave in a particular way due to a combination of genetic, environmental, and psychological factors.
Perceptual Set
A tendency to perceive or notice some aspects of the available sensory data while ignoring others, influenced by expectations and prior knowledge.
Artificial Laughter
Generated or simulated laughter, not resulting from genuine humor or joy.
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