SOLVE Linear Regression using quadratic nonlinear polynomial regressing model, then find the RS, RT, R² and R. n=7 Σx₁y₁ = 1

Question

SOLVE Linear Regression using quadratic nonlinear polynomial regressing model,
then find the RS, RT, R² and R.
n=7    Σx₁y₁ = 1      ΣX²i= 119.5
 ΣXi= 140              x=28/7=4
Σyi=24                 y=24/7== 3.428571

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