Below you are given information on John's income for the past 7 years. 
a.Use regression analysis to obtain an expression for the linear trend component.
b.Forecast John's income for the next 5 years.
Definitions:
Psychiatric Patients
Individuals receiving treatment for mental disorders, which can range from mild mood disorders to severe psychiatric conditions.
General Population
Refers to the total population or the entirety of individuals in a specified area without any specific exclusions.
Depersonalization Disorder
A mental disorder characterized by persistent or recurrent feelings of detachment from one's own body or thoughts, as if one is an outside observer of their own life.
Adolescence
A developmental stage that occurs between childhood and adulthood, characterized by significant physical, psychological, and emotional changes.
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