Applied Environ. Stats
NADA for R
Info You Can Use
Top 12 Tips
These twelve tips are the backbone of our Applied Environmental Statistics course. They were also sent out to our newsletter subscribers in March 2014, so if you find them helpful,
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— Dennis Helsel
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Top Twelve Tip #1
Plot the Data First!
Top Twelve Tip #2
Treat Outliers Like Children: correct them when needed, but never throw them out.
Top Twelve Tip #3
Objectives drive which statistics to use.
Top Twelve Tip #4
The hardest thing for a human being to do.
Top Twelve Tip #5
Transforming data requires re-transforming solutions.
Top Twelve Tip #6
Understand the assumptions behind your methods.
Top Twelve Tip #7
Maximize the signal to noise ratio.
Top Twelve Tip #8
Meet the demands of regression.
Top Twelve Tip #9
"All models are wrong; some models are useful" (G. E. P. Box), so choose the least hopelessly wrong model.
Top Twelve Tip #10
Know your target for trend analysis.
Top Twelve Tip #11
Nondetects: never substitute. Mine the information in the proportions.
Top Twelve Tip #12
“An approximate answer to the right question is worth a great deal more than a precise answer to the wrong question."