The author surveyed the students in one of his algebra classes, asking them their ages. Here are their responses:

a. Construct a dotplot.
b. What proportion of the observations are between 20 and 22 years, inclusive?
c. What proportion of the observations are at least 24 years?
d. What proportion of the observations are greater than 24 years?
e. If there were exactly one outlier, what would it be? What does it mean in this situation?

Transcribed Image Text:

18 18 24 20 19 19 17 22 18 18 20 28 20 20 18 19 19 21 25 20 24 21 21 20 22 19