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Dealing with Data

Explore different graphs depicting survey data on favorite foods, cell phone usage, vacation plans, and more. Learn to discern fair representations, spot errors, make predictions, and interpret trends. Dive into histograms, box-and-whisker plots, and stem-and-leaf diagrams. Enhance your graph comprehension skills through practical examples in various contexts.

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Dealing with Data

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  1. Dealing with Data Understanding Graphs

  2. 1. A survey was taken to show people’s favorite foods. Which graph is a fairer representation of the data? Why? Eric Curts, North Cantonwww.northcanton.sparcc.org/~technology/excel/index.html

  3. 2. The graphs show the growth in the use of cell phones. They used the same data. Why do the graphs look different? Which better explains the data. http://www.glencoe.com/sec/math/prealg/prealg03/extra_examples/chapter12/lesson12_5.pdf

  4. 3. This appeared in the Winnipeg Free Press. Is the headline correct or is the graph correct? http://www.math.sfu.ca/~cschwarz/Stat-301/Handouts/node14.html

  5. 4. How could this graph be better?

  6. 5. The graph shows the 7th graders’ vacation plans. It is representative of the entire school. If there are 300 kids in the school, how many have no vacation plans?A. 50 students B. 75 students C. 100 students D.125 students

  7. 6. What is the error in this histogram?

  8. 7. Is one of these graphs better than the other? Why?

  9. 8. What is the trend of this graph? Can you predict enrollment in 2010?

  10. 9. These box and whisker plots show the death rate and compares years a person has smoked. What does it show you? Could there be any problems with the data?

  11. 10. This stem and leaf plot has an error. What is it and why is it an error? 9|2 means 92

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