Section B: Long Questions - - B1: The following information regarding a dependent variable Y and...

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Question

Section B: Long Questions - - B1: The following information regarding a dependent variable Y and an independent (SD1: 10 mark

business Operations-Management

Answer 1

Answer #1

1.

SST = Σ(y - ȳ)² = 3948

2.

SSE = SST - SSR = 3948 - 208 = 3740

3.

MSE = SSE / df of regression = 3740 / 1 = 3740

4.

Slope (a) = Σ(x - x̅).(y - ȳ) / Σ(x - x̅)² = -312/468 = -0.6667

5.

Intercept (b) = ȳ - a * x̅ = (Σy)/n - a * (Σx)/n = (680/4) - (-0.6667)*(180/4) = 200

Answer 2

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