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 $\pm 0.8$, 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:

   
   
   
   

   Solution

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