StATS: A simple math error (created 2008-04-06).

People write in once in a while to correct errors on my webpages. God bless them! I had an error on my What is a P-value? page.

The p-value involved a comparison of two proportions 91% and 82%. I had listed the two fractions as 171 / 240 and 586 / 719. The first fraction is clearly too small to produce 91%. I had actually misread the table in the paper, and the fraction should have been written as 219 / 240.

This has been fixed, but it will take a few days to upload the fix.

I greatly appreciate people who find these things for me. Perhaps the best example of eagle-eyed proof-reading was someone who noted that my bibliographic reference on Stats: Odds ratio versus relative risk (January 9, 2001) to Fahey 1996 should actually be Fahey 1995. That's an eye for detail that I have to admire.

Creative Commons License This work is licensed under a Creative Commons Attribution 3.0 United States License. It has borrowed heavily from the StATS website, also licensed under a Creative Commons Attribution 3.0 United States License. This page was written by Steve Simon and was last modified on 2010-04-01. Need more information? I have a page with general help resources. You can also browse for pages similar to this one at Category: Website details.

 

This page was written by Steve Simon while working at Children's Mercy Hospital. Although I do not hold the copyright for this material, I am reproducing it here as a service, as it is no longer available on the Children's Mercy Hospital website. Need more information? I have a page with general help resources. You can also browse for pages similar to this one at