Analyzing Box and Whisker Plots

Use the following double box and whisker plots to answer the questions 1 - 5. 1. Find the interquartile range for roller blades. (Remember to subtract the upper quartile minus the lower quartile.) 30 40 50 60 2. How much does the least expensive skateboard cost? $20 $40 $60 $80 3. Each section of the box-and-whisker plot represents what percent of the data? 25% 50% 75% 100% 4. Choose correct percent. Remember each section of the box-and-whisker plot represent 25% of the data. Make sure your looking at the correct box plot (rollerblades or skateboards). The percent of roller blades that cost between $50 and $100. 50%The percent of skateboards that cost $60 or more. 75%The percent of skateboards that cost between $100 and $120. 25% 5. What is the difference in the medians for roller blades and the skateboards? (Make sure you subtract the two medians!) 15 20 75 90 6. Find the median, range, and interquartile range of this box-and-whisker plot. The median of the box-and-whisker plot is 4.The range of the box-and-whisker plot is 7.The interquartile range is 2. A B C D