Consider the following scatter plot: 
Given the apparent relationship between the x and y variable,a possible curvilinear regression model to consider would be a second-order polynomial model.
Definitions:
Promise
A declaration or assurance that one will do something or that a particular thing will happen.
Obsessive-compulsive Disorder
A mental disorder characterized by recurring unwanted thoughts (obsessions) and repetitive behaviors (compulsions) that the individual feels compelled to perform.
Illness Anxiety Disorder
A chronic condition characterized by excessive worry about having or acquiring a serious illness, despite medical reassurance.
Dissociative Identity Disorder
A psychological disorder characterized by the presence of two or more distinct personality states that control an individual's behavior at different times.
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