The question below refers to the following situation:
A researcher is interested in the relationship between age and the number of hours spent per week playing video games. Her data are as follows: 
Calculate the coefficient of determination.
Definitions:
Narcissism
Narcissism is a personality trait characterized by an inflated sense of self-importance, a deep need for excessive attention and admiration, and a lack of empathy for others.
Extraversion
A personality trait characterized by sociability, enthusiasm, and assertiveness, indicating an outward turning of emotional energy.
Self-concept
An idea of the self constructed from the beliefs one holds about oneself and the responses of others.
Congruent
In psychology, congruence refers to harmony and alignment between an individual's internal feelings, thoughts, and their external behaviors and situation.
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