Using a parameter it's possible to represent a property of an entire population with a single number instead of millions of individual data points. There are a number of possible parameters to choose from such as the...
Created by David Howell of the University of Vermont, this website is self described as: "This document was prepared as an illustration of the use of both t tests and correlation/regression analysis in drawing...
Created by David Howell of the University of Vermont, this short article discusses the difference between "important" and "statistically significant." The data used come from a study comparing male faculty salaries to...
Created by David Howell of the University of Vermont, this page was written as instructions for a SAS lab assignment, but the example can be used with other programs. The study compares three treatments for rape...
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