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    linear regression model and correlation coefficient

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    5. For the following data:
    Case X Y
    1 13 5
    2 17 45
    3 9 0
    4 11 18
    5 15 25
    6 8 4
    7 13 10
    8 18 35
    9 16 15
    10 10 0

    X-Bar = 13, SDx = 3.46; Y-Bar = 15.70, SDy = 15.28

    a. Calculate slope a.
    b. Calculate y-intercept b.
    c. Write the regression equation including a and b below. Assume an unknown x.

    6. Calculate the correlation coefficient between the X and Y data in the table above (in # 5). (You may use either the raw score or the deviation formula.)
    a. What is r?
    b. What does r tell us?

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    https://brainmass.com/statistics/regression-analysis/linear-regression-model-and-correlation-coefficient-129502

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    Solution Summary

    The solution shows detailed calculation of the linear regression slope and y-intercept. It also calculates the correlation coefficient and explains the meaning of it.

    $2.19

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