Exam 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
$\pm 0.3$, the true/false statements are either about correct or clearly wrong.)

The distribution is unimodal. / The distribution is not unimodal.

The distribution is symmetric. / The distribution is rightskewed. / The distribution is leftskewed.

The boxplot shows outliers. / The boxplot shows no outliers.

A quarter of the observations is smaller than which value?

A quarter of the observations is greater than which value?

Half of the observations are greater than which value?
Solution

True. / False.

False. / False. / True.

True. / False.

2.54.

3.9.

3.72.