The following table displays the joint probability distribution of X and Y.What is the covariance between the X and Y? 
Definitions:
Academic Achievements
The measurable performance outcomes in educational settings, including grades, test scores, and degrees earned.
Surgical Skills Exam
An assessment designed to evaluate a surgeon's competency in performing surgical procedures.
MMPI
The Minnesota Multiphasic Personality Inventory, a standardized psychometric test of adult personality and psychopathology used to diagnose mental disorders.
Purchase Choice
The decision made by consumers regarding which products or services to buy.
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