For Wendy Lewis (Research Stats)

2. Graphing Critiques

Critique at least one of the "Example" graphs on the National Center for Education Statistics (NCES) "Create a Graph" tool website. Examples include:

• U.S. Public School Student Membership

• International Per Capita Consumption of Turkey

• U.S. Average Price of Gasoline

• Percentage of Students Who Report Being Bullied at School

• Airline On-Time Statistics and Delay Causes

• Air Passenger Travel Arrivals in the United States

http://nces.ed.gov/nceskids/createagraph/default.aspx

If you don't like these examples, supply a graph of your own you have recently seen in the press or through work and critique it.

3. Histogram Grouping

Look at how different groupings in histograms on SAT scores can lead to different conclusions through this  interactive tool. (You can also choose something other than SAT scores, if it pleases you.)

Put in interval values of 10, 20, and 50 and discuss how that changes the findings. Which do you think is most appropriate and why? Would you choose different parameters depending on whether you wanted to make a point about scores being relatively uniform, or that higher scoring students are relatively unusual?

http://www.shodor.org/interactivate/activities/Histogram/

Dataset_Number of

Violent Crimes