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      "text": "COST FUNCTION: Cost = Σ(predicted – actual)^2 = 10.7476",
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      "text": "FORMULAS FOR β COEFFICIENTS: Slope β1 = (n * Σ(x*y) – Σ(x) * Σ(y)) / (n * Σ(x^2) – (Σ(x))^2) = 10.11; Intercept β0 = (Σ(y) - β1 * Σx) / N = 5.15",
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