Answer
a) The prices in Baltimore appear to be higher on average than other markets, it is also more variable. On the other hand, prices in Chicago are slightly higher than the prices in Denver and Dallas.
b) The presence of outliers on the low end in Chicago and Baltimore and on the high end in Dallas doesn't affect the overall conclusions about the prices in the four markets
Work Step by Step
a) The boxplot of Chicago is the highest one, in fact it's slightly above 3 on the price axe which means it's higher on average and the box is longer covering the area between 2.6 and 3.05 on the prices axes which means more variation.
b) There are three outliers (dots) under Baltimore, one above Dallas and under Chicago, the number of outliers is neglectable and 7 outliers over 8 are not far from the maximum and the minimum so their presence doesn't affect the overall conclusion.
