Our World Statistics Day conversations have been a great reminder of how much statistics can inform our lives. Do you have an example of how statistics has made a difference in your life? Share your story with the Community!

Lister Case Study

The Lister and the Germ Theory case study and data.


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Two Sample Proportions:

Use results from a 1860’s sterilization study to determine if there is evidence that the sterilization process reduces deaths when amputations are performed.  Key ideas: Practical importance and statistical significance, observational studies, relative risk, scope of inference.

JMP features demonstrated:
Analyze > Fit Y by X

Statistical/graphical tools used:
Mosaic plots, contingency tables, Pearson and likelihood ratio tests, Fisher's exact test, two-sample proportions test, one- and two-sided tests, confidence interval for the difference, relative risk.


Statistics case studies provided by Dewayne Derryberry of the Math Department at Idaho State University.