Welcome to Practical Stats

Statistical training and consulting for the environmental sciences and natural resources. From Singapore to South Dakota, our courses have enabled scientists to build better regression models, test for trends, see multivariate patterns, and correctly interpret nondetect (censored) data.

Our Mission
To train scientists in air, water, soil, and biological sciences to make sense of your data.

Training Courses
We provide online on-demand courses in Environmental Statistics at our Online Training Center. See our Training Page for course details.

Registration for our two online courses at our Online Training Center, Applied Environmental Statistics and Nondetects And Data Analysis, will close at COB on March 31, 2021. If you are interested in taking these courses, be sure to register before the closing date!

Also of Interest
The 2020 version of the classic textbook Statistical Methods in Water Resources is now available as
1. a free download. See the link on our Books page
2. an inexpensive hardcopy sold by the US Geological Survey, at https://store.usgs.gov/product/533012


We've provided statistical training for the environmental sciences and natural resources since 1990 in the United States, Europe, Asia and the Middle East. See our credentials page and Dennis Helsel's publications list on ResearchGate. We clearly communicate information to the working scientist. We make statistics current, accurate, and practical.

Privacy Policy
This site stores no cookies on your device. It does not track you in any way.
There are no advertisements.
Graphs only display the graphic, with no hidden functions.
If you send us email using our Contact Us page, we will respond to your email, which requires us to save your email address. Your email address is never provided to any other party or person.
If you send us email requesting an answer, you may receive occasional emails from us announcing information on environmental statistics (no more than 3 per year, usually less). In your Contact Us email you may request that we do not add you to our occasional information list, and your email address will not be saved — but you will not get useful information from us on environmental statistics.

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