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:
Deficient Study Skills
The lack or insufficiency of techniques and strategies that enhance learning efficiency and academic performance.
Positive Symptoms
In the context of mental health, symptoms that add abnormal experiences, such as hallucinations or delusions, particularly in schizophrenia.
Schizophrenia
A severe mental disorder characterized by distortions in thinking, perception, emotions, language, sense of self, and behavior, greatly affecting how a person relates to reality.
Normal Functions
Refers to the typical and expected processes or operations of systems, whether biological, mechanical, or psychological.
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