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(3) (See Pearson correlation coefficent) Consider the linear regression of y on a based on a data: 0 1 2 3 4 y 2 1

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(3) (See Pearson correlation coefficent) Consider the linear regression of y on a based on a data: 0 1 2 3 4 y 2 1 4 3 5 Using the Pearson's correlation coefficient Try, calculate the coefficient of determination R2 of the regression, and then express it as an irreducible fraction. (7 points)

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