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    Scatter plot, correlation and regression

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    A study was done with a group of university students to determine if there was a correlation between the amounts of sleep they got and their academic performance. The following table lists some data from the study.

    Student
    A
    B
    C
    D
    E
    F
    G
    H
    I
    J
    K
    L

    Hours of Sleep
    6.0
    6.5
    7.0
    6.5
    8.5
    8.0
    9.0
    8.5
    7.0
    7.5
    6.5
    7.5

    Average Mark
    62
    58
    66
    71
    76
    82
    76
    75
    70
    68
    56
    77

    a.Make a scatter plot of the data.
    b.Using a graphing calculator, determine the correlation coefficient.
    c.What would you conclude about the relationship between the two variables

    © BrainMass Inc. brainmass.com October 10, 2019, 1:37 am ad1c9bdddf
    https://brainmass.com/math/interpolation-extrapolation-and-regression/scatter-plot-correlation-regression-342141

    Solution Preview

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    Stats of two variables
    A study was done with a group of university students to determine if there was a correlation between the amounts of sleep they got and their ...

    Solution Summary

    The expert examines scatter plots, correlations and regression analysis.

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