THE VIDEO SHELF · p-value variability
Dance p 3 Mar09
Geoff Cumming uses a simulation to show how wildly the p value varies from one replication to the next because of sampling variability. He argues for estimation and confidence intervals over null hypothesis significance testing.
Why HN readers recommended it
Recommended as a vivid visual demonstration of how unreliable p-values are.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- Geoff Cumming
- Topic
- p-value variability
- Format
- explainer
- Level
- intro
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 3
- Recommendation years in dataset
- 2011–2015
These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.
From the original HN conversations
Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.
The p-value [1] criterion is often used to test a proposed hypothesis in medical and social science research papers. When you stumble upon something along the lines of "studies that shown that eating broccoli makes people happy" in your everyday life, it comes down to …
knowledgesale on Hacker News · 2011-12
In Ask HN: What interesting non-intuitive things do you know?The audio is a bit quiet but the 'dance of the p values' video [1] linked to by the article is absolutely fantastic and well worth watching. [1] [VIDEO]
po on Hacker News · 2015-02
In Psychology Journal Bans Significance Testing
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.