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Statistics LibreTexts

8.E: Advanced Graphs (Exercises)

  • Page ID
    2128
  • General Questions

    Q1

    What are \(Q-Q\) plots useful for?

    Q2

    For the following data, plot the theoretically expected \(z\) score as a function of the actual \(z\) score (a \(Q-Q\) plot).

    0 1.2
    0 1.2
    0 1.2
    0 1.2
    0 1.3
    0 1.3
    0.1 1.3
    0.1 1.3
    0.1 1.3
    0.1 1.4
    0.1 1.4
    0.2 1.5
    0.2 1.6
    0.3 1.7
    0.3 1.7
    0.4 1.7
    0.5 1.8
    0.6 1.8
    0.6 1.9
    0.6 1.9
    0.6 2.0
    0.6 2.0
    0.6 2.0
    0.6 2.1
    0.6 2.1
    0.6 2.1
    0.7 2.1
    0.7 2.1
    0.8 2.1
    0.8 2.1
    0.8 2.3
    0.8 2.5
    0.8 2.7
    0.9 3.0
    1.0 4.2
    1.0 5.0
    1.1 5.7
    1.1 12.4
    1.2 15.2
    1.2  

    Q3

    For the data in problem 2, describe how the data differ from a normal distribution.

    Questions from Case studies

    Q4

    For the "SAT and College GPA" case study data, create a contour plot looking at University GPA as a function of Math SAT and High School GPA. Naturally, you should use a computer to do this.

    Q5

    For the "SAT and College GPA" case study data, create a \(3D\) plot using the variables University GPA, Math SAT, and High School GPA. Naturally, you should use a computer to do this.

    Contributor

    • Online Statistics Education: A Multimedia Course of Study (http://onlinestatbook.com/). Project Leader: David M. Lane, Rice University.