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Introduction to Nondetects And Data Analysis

Simple things to do (and not do) with nondetects

This free webinar introduces modern methods for statistical analysis of data with nondetects. While a complete understanding will be available soon in our online course Nondetects and Data Analysis, this webinar will let you avoid common errors, and get started. What you will learn:

• the consequences of substituting one-half the reporting limit on data analysis (spoiler alert: its not good).
• what software is available for analysis of censored data.
• what nonparametric methods are available for estimating summary statistics, test for differences between groups, and for correlation/regression of censored data.
• what parametric methods are available for estimating summary statistics, test for differences between groups, and for correlation/regression of censored data.
Relevant materials are also available online for you to digest at your leisure afterward. The webinar is given by Dr. Dennis Helsel of PracticalStats.com.



Your Instructor


Dennis Helsel
Dennis Helsel

Dennis Helsel (Ph.D. Environmental Science and Engineering) is a consultant and trainer on statistical methods for environmental and natural resource scientists through his firm, Practical Stats. He has authored three textbooks including Statistics for Censored Environmental Data using Minitab and R (2012), which presents methods for handling data below detection/reporting limits. He regularly conducts webinars, seminars and courses on topics such as Urban Legends in Environmental Statistics and Statistics for Contaminated Sites. He worked as a hydrologist, geochemist, and statistician for 30 years at the US Geological Survey before starting Practical Stats. For his training courses in applied statistics within and outside North America he received the Distinguished Achievement Award in 2003 from the American Statistical Association’s Section on Statistics and the Environment.


Class Curriculum


  Intro to Nondetects And Data Analysis
Available in days
days after you enroll

Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.

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