## Exam 1

1. #### Question

For the 47 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 $\pm0.3$, 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 greater than:

#### Solution

1. True. / False.
2. False. / False. / True.
3. True. / False.
4. 2.54.
5. 3.9.
6. 3.72.