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    Question

    For the variables X and Y, we collect 4 observations

    with ∑ X = 10,∑ Y = 14,∑ X2 = 30,∑ Y2 = 54,∑ XY = 31 The regression line y on x is
    A y = 0.8x - 5.5 Correct Answer Incorrect Answer
    B y = -0.8x - 5.5 Correct Answer Incorrect Answer
    C y = -0.8x - 5.5 Correct Answer Incorrect Answer
    D y = -0.8x + 5.5 Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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