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11th Standard English Medium Business Maths Subject Correlation and Regression Analysis Book Back 1 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Business Maths

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. If the values of two variables move in opposite direction then the correlation is said to be ______.

    (a)

    Negative

    (b)

    Positive

    (c)

    Perfect positive

    (d)

    No correlation

  2. If r(X,Y) = 0 the variables X and Y are said to be ______.

    (a)

    Positive correlation

    (b)

    Negative correlation

    (c)

    No correlation

    (d)

    Perfect positive correlation

  3. From the following data, N = 11, ΣX = 117, ΣY = 260, ΣX2 = 1313, ΣY2 = 6580, ΣXY = 2827 the correlation coefficient is ________.

    (a)

    0.3566

    (b)

    -0.3566

    (c)

    0

    (d)

    0.4566

  4. The variable whose value is influenced (or) is to be predicted is called ________.

    (a)

    dependent variable

    (b)

    independent variable

    (c)

    regressor

    (d)

    explanatory variable

  5. The correlation coefficient ________.

    (a)

    r = ±\(\sqrt { { b }_{ xy }\times { b }_{ yx } } \)

    (b)

    r = \(\frac { 1 }{ { b }_{ xy }\times { b }_{ yx } } \)

    (c)

    r = bxy x byx

    (d)

    r = ±\(\sqrt { \frac { 1 }{ { b }_{ xy }\times { b }_{ yx } } } \)

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