mattheuwagas9343 mattheuwagas9343

25-04-2024
Mathematics

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x and y have a quadratic relationship. A polynomial regression model shows y = 1 + 0.64x + 0.2x² + 1.3x³, and R²_adj = 0.81. What is Pearson's correlation coefficient of x and y?
A) 0.90
B) 0.60
C) 0.90
D) 0.60

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