March 2015
Intermediate to advanced
176 pages
4h 27m
English
Using too many statistical significance tests is a good way to get misleading results, but it’s also possible to claim significance for a difference you haven’t explicitly tested. Misleading error bars could convince you that a test is unnecessary, or a difference in the statistical significance of two treatments might convince you there’s a statistically significant difference between them. Let’s start with the latter.
“We compared treatments A and B with a placebo. Treatment A showed a significant benefit over placebo, while treatment B had no statistically significant benefit. Therefore, treatment A is better than treatment B.”
We hear this all the time. It’s an easy ...
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