Question: please answer with full explanation. Explain with example (Fit the linear regression model and calculate the accuracy score of the model performance that calculates the

please answer with full explanation.

please answer with full explanation. Explain with example (Fit the linear regression

Explain with example (Fit the linear regression model and calculate the accuracy score of the model performance that calculates the Mean Square Error (MSE)) and Define cross-validation as a measure of the predictive performance of the statistical model that can be applied on the test data

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