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Correlation Tes...

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  • Question 1
    1 / -0

    The marks obtained by the students in physics and in mathematics are as follows. 

    Marks in Physics3523471710439628
    Marks in Mathematics3033452384912431
    Compute of correlation of ranks.

  • Question 2
    1 / -0

    Calculate the coefficient of correlation between $$x$$ and $$y$$ for the data

    x12345678910
    y31051294876

  • Question 3
    1 / -0

    The marks obtained by nine students in Physics and Mathematics are given below:
    Physics$$48$$$$60$$$$72$$$$62$$$$56$$$$40$$$$39$$$$52$$$$30$$
    Mathematics$$62$$$$78$$$$65$$$$70$$$$38$$$$54$$$$60$$$$32$$$$31$$
    Interpret the result.

  • Question 4
    1 / -0

    The given data shows test scores and sales by nine salesman during last year in a firm. Find regression of Y on X.

    Test Score141924212622152019
    Sales (in 000'Rs )313648375045334139

  • Question 5
    1 / -0

    In a skating competition the judges gave the five competitors the following marks. Calculate a coefficient of rank correlation.

    CompetitorsABCDE
    1st judge5.75.85.95.65.5
    2nd judge5.65.76.05.55.8

  • Question 6
    1 / -0

    If the dependent variable increases as the independent variable increases in an estimating equation, the coefficient of correlation will be in the range of _________.

  • Question 7
    1 / -0

    Match the following items in List - I with most suitable options in List - II:

    List-IList-II
    (a) Fisher1. Inverse probability
    (b) Karl Pearson2. Normal Distribution
    (c) Thomas Baye's3. Correlation Coefficient
    (d) Karl Gauss4. Index Numbers

  • Question 8
    1 / -0

    Karl Pearson's co-efficient of correlation between two variables is _____________.

  • Question 9
    1 / -0

    Following are the ranks of $$10$$ students in Maths and Biology projects given by $$2$$ professors. Find the rank correlation coefficient.

    Maths48531210769
    Biology14562389710

  • Question 10
    1 / -0

    If bxy$$=0.25$$ and byx$$=0.64$$, correlation coefficient is _________.

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