a On average which commodity is the most expensive b Is the

a) On average, which commodity is the most expensive?

b) Is the newspaper always more expensive then a ride on public transportation? Explain

c) Does the presence of outliers affect your conclusions in part a or b?

2.5 2 1.5 0.5 Pubic Trans Coffee News Variable

Solution

a) Coffee is the most expensive commodity, on average.

b) Newspapers are generally more expensive than a ride on public transportation, but there are cities in which a ride on public transportation is more expensive than a newspaper in other cities.

c) Each distribution has a high outlier, but the presence of the outlier doesn’t affect any of the previous conclusions.