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blog.philbirnbaum.com | ||
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thelogicofscience.com
If you've ever read a scientific paper, you've probably seen a statement like, "There was a significant difference between the groups (P = 0.002)" or "there was not a significant correlation between the variables (P = 0.1138)," but you may not have known exactly what those numbers actually mean. Despite their prevalence and wide-spread use,... |
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www.p-value.info
Why do we tend to use a statistical significance level of 0.05? When I teach statistics or mentor colleagues brushing up, I often get the ... |
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jaydaigle.net
This is the second-part of a three-part series on hypothesis testing. Today we'll look at the way we do hypothesis testing in practice, and how it tends to fail. Modern researchers use hypothesis testing as a tool to develop knowledge, but it's really a tool for making decisions, and so it encourages us to draw strong conclusions from weak evidence. It also encourages us to view studies that don't reject the null hypothesis as failures, which leads even honest and dedicated researchers to do shoddy resea... |
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errorstatistics.com
1. Introduction I gave a talk on March 8 at an AI, Systems, and Society Conference at the Emory Center for Ethics. The organizer, Alex Tolbert (who had been a student at Virginia Tech), suggested I speak about controversies in statistics, especially P-hacking in statistical significance testing. A question that arises led to my title:... |
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