Chapter 1: Q 2.4. (page 61)
The roster of the Dallas Cowboys professional football team included offensive linemen. Their weights (in pounds) were
Draw a boxplot of the data.
Short Answer
The minimum:
The median:
The maximum:
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Chapter 1: Q 2.4. (page 61)
The roster of the Dallas Cowboys professional football team included offensive linemen. Their weights (in pounds) were
Draw a boxplot of the data.
The minimum:
The median:
The maximum:
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Comparing investments Should you put your money into a fund that buys stocks or a fund that invests in real estate? The boxplots compare the daily returns (in percent) on a 鈥渢otal stock market鈥 fund and a real estate fund over a year ending in November

(a) Read the graph: about what were the highest and lowest daily returns on the stock fund?
(b) Read the graph: the median return was about the same on both investments. About what was the median return?
(c) What is the most important difference between the two distributions?
Cool car colors The most popular colors for cars and light trucks change over time. Silver passed green in to become the most popular color worldwide, then gave way to shades of white in . Here is the distribution of colors for vehicles sold in North America in
(a) What percent of vehicles had colors other than those listed?
(b) Display these data in a bar graph. Be sure to label your axes and title your graph.
(c) Would it be appropriate to make a pie chart of these data? Explain.

El Ni帽o and the monsoon It appears that El Ni帽o, the periodic warming of the Pacific Ocean west of South America, affects the monsoon rains that are essential for agriculture in India. Here are the monsoon rains (in millimeters) for the strong El Ni帽o years between and
(a) To make a stem plot of these rainfall amounts, round the data to the nearest 10, so that stems are hundreds of millimeters and leaves are tens of millimeters. Make two stem plots, with and without splitting
the stems. Which plot do you prefer?
(b) Describe the shape, center, and spread of the distribution.
(c) The average monsoon rainfall for all years from to is about millimeters. What effect does El Ni帽o appear to have on monsoon rains?

Hit movies According to the Internet Movie Database, Avatar is tops based on box office sales worldwide. The following table displays data on several popular movies.

(a) What individuals does this data set describe?
(b) Clearly identify each of the variables. Which are quantitative? In what units do you think they are measured?
(c) Describe the individual in the highlighted row.
or, in general, compare related quantities.
Fuel economy (Introduction) Here is a small part of a data set that describes the fuel economy (in miles per gallon) of model year 2009 motor vehicles:

(a) What are the individuals in this data set?
(b) What variables were measured? Identify each as categorical or quantitative.
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