The following residual plot is an output of a regression model. 
Based on this residual plot,there is evidence to suggest that the underlying relationship between the y variable and the x variable is nonlinear.
Definitions:
Honest
The quality of being truthful and transparent in one's actions and communications, avoiding deceit or fraud.
Political Skill
A combination of social astuteness with the capacity to adjust and adapt behavior to the demands of different situations.
Ingratiating
An attempt to increase one’s attractiveness to others to influence their behavior
Self-promotion
The act of advocating for oneself to advance personal goals, often involving highlighting one's achievements and capabilities to others.
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