http://www.ck12.org Chapter 8. Organizing and Displaying Data for Comparison
The following box-and-whisker plots were drawn to analyze the data collected in a survey of scores for the doubles
performances in the figure skating competitions at 2 Winter Olympic games. The box-and-whisker plot on the top
represents the scores obtained at the 2010 winter games in Whistler, BC. The box-and-whisker plot on the bottom
represents the scores obtained at the 2006 winter games in Torino, Italy.
Here is what the double box-and-whisker plots look like when created with a TI-84 calculator:
Use the double box-and-whisker plots to answer the following questions:
- What is the five-number summary for the 2006 games?
- What is the five-number summary for the 2010 games?
- 50% of the judge’s scores were at least what for the 2006 games? 50% of the judge’s scores were at least what
for the 2010 games? - What was the range for the scores in the 2006 games? What was the range for the scores in the 2010 games?
- In which of the winter games would you say that the data is more equally spread out?
- In which of the winter games would you say that the scoring was more predictable and reliable?
Summary
This chapter reviews graphs of the previous chapter, and adds four more complex graph types. The new types are
summarized in the following table: