To help travelers know what to expect, researchers collected the prices of commo

Question

To help travelers know what to expect, researchers collected the prices of commodities in 16 cities throughout the world. Here are boxplots comparing the average prices of a bottle of water, a dozen eggs, and a cappuccino in the 16 cities (prices are all in US$). Use these boxplots to complete parts a and b below.

1.) These are prices for the same 16 cities. But can you tell whether a cappuccino is more expensive than eggs in all cities? Explain.

A.It is not possible to tell whether a cappuccino is more expensive than eggs in all cities, it is possible to pair up the data so that this is true or untrue.

B.Since all three quartiles for cappuccino prices are above the corresponding quartile for egg prices, cappuccinos are more expensive in all cities.

C.The maximum price of a cappuccino is greater than the maximum price of eggs, so in all cities cappuccinos are more expensive.

D.The minimum price of a cappuccino is lower than the minimum price of eggs, so in at least one city eggs are more expensive

Explanation / Answer

In the boxplot, the lowest line represents the minimum data value. Since for Cappuccino, this line is lower than Eggs, there would be atleast one city in which eggs are more expensive.

Hence,

Option D is correct.

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