Multiple Choice Questions on If 4 ndash 5 33 0 and 20 ndash 9 107 are two lines of regression then what are the values of and res........... for NDA Exam Preparation

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Multiple Choice Questions

If 4 ndash 5 33 0 and 20 ndash 9 107 are two lines of regression then what are the values of and res...........

Mathematics (NDA) Coordinate Geometry
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    If 4\bar{x} – 5\bar{y} + 33 = 0 and 20\bar{x} – 9\bar{y} = 107 are two lines of regression, then what are the values of \bar{x} and \bar{y} respectively?

    12 and 18

    Incorrect Answer

    18 and 12

    Incorrect Answer

    13 and 17

    Correct Answer

    17 and 13

    Incorrect Answer
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    Explanation:

    Solving 4\bar{x} – 5\bar{y} + 33 = 0 and 20\bar{x} – 9\bar{y} - 107 =0
    We get \bar{x}=13 ,\bar{y} =17

    By: Munesh Kumari
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