Exam 1

  1. Question

    For the 49 observations of the variable x in the data file boxhist.csv draw a histogram, a boxplot and a stripchart. Based on the graphics, answer the following questions or check the correct statements, respectively. (Comment: The tolerance for numeric answers is ±0.8\pm0.8, the true/false statements are either about correct or clearly wrong.)

    The distribution is unimodal: true / false
    The distribution is: symmetric / right-skewed / left-skewed
    The boxplot shows outliers: true / false
    A quarter of the observations is smaller than:
    A quarter of the observations is greater than:
    Half of the observations are smaller than:


    1. False / True
    2. True / False / False
    3. False / True
    4. 2.55
    5. 13.1
    6. 10.4