You'll need these tools to complete assignments.

• Normal Distribution
  http://zebu.uoregon.edu/~dmason/stat/stat2.html
  
  
• Z-test
  http://zebu.uoregon.edu/~dmason/stat/2means.html
  
  
• Exponential Growth Tool
  http://zebu.uoregon.edu/~dmason/stat/expgrow.html
  
  
• Linear Regression and Correlation Tool
  http://zebu.uoregon.edu/~dmason/stat/correl.html

Notes

There is a very small glitch that we have discovered in the way the tool works concerning the generation of graphs. As a result, its possible that after you hit the calculate button a graph may not be generated. If this happens, simply hit the back button (your data will still be there) and hit calculate again, and the graph should appear.

Standard Deviation is another name for what we have called dispersion in class.