The following information regarding a dependent variable y and an independent variable x is provided: 
The mean square error (MSE) is
Definitions:
Joint Probability Distribution
Describes the probability of two or more events occurring at the same time and the relationship between them.
Probability Distribution
A mathematical description of outcomes in a statistical experiment, detailing how probabilities are distributed across the various possible outcomes.
Mobile Phone Store
A store focused on selling mobile phones, accessories, and related services.
Joint Probability Distribution
The probability distribution that encompasses the probabilities of various outcomes for two or more random variables simultaneously.
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