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    Question

    The trend line with 1975 as origin is Y = 20.6 + 1.68X,

    the trend line with 1971 as origin will be -
    A Y = 20.6 + 6.72 X Correct Answer Incorrect Answer
    B Y = 13.88 + 1.68 X Correct Answer Incorrect Answer
    C Y = 34.61 + 1.68X Correct Answer Incorrect Answer
    D Y = 26.32 + 6.72X Correct Answer Incorrect Answer

    Solution

    The trend line with 1975 as origin is Y = 20.6 + 1.68X, When we take 1971 as origin, we go down by 4 years, the trend line with 1971 as origin will be  Y = 20.6  + 1.68 (X– 4) Y = 20.6 + 1.68X – 6.72 Y = 13.88 + 1.68 X

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