Here is a stem-and-leaf display of the escape time data introduced in Exercise 36 of this chapter.

a. Determine the value of the fourth spread.
b. Are there any outliers in the sample? Any extreme outliers?
c. Construct a boxplot and comment on its features.
d. By how much could the largest observation, currently 424, be decreased without affecting the value of the fourth spread?

Transcribed Image Text:

32 55 3 49 3 35 6699 36 37 03345 38 9 39 2347 40 23 34469 42 4