New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

    The Pearson's correlation coefficient between following

    observation X:            1              2              3              4 Y:            3              4              2              1 is - 0.8. If each observation of X is halved and of Y is doubled, then Pearson's correlation coefficient equals to
    A -0.81 Correct Answer Incorrect Answer
    B -0.79 Correct Answer Incorrect Answer
    C -0.80 Correct Answer Incorrect Answer
    D -0.82 Correct Answer Incorrect Answer

    Solution

    The correct answer is C

    Practice Next