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Dance p 3 Mar09

Geoff Cumming · explainer · Watch on YouTube

Data science & statisticsScientific method & science communication

What it is

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 Hacker News recommends it

Recommended as a vivid visual demonstration of how unreliable p-values are.

  • 2 people recommended it
  • 2 different months
  • 2 strong recommendations
  • first 2011, last 2015

What HN commenters said

  1. “The [3] video pretty much sums it up and by all means is worth a watch.”

    Visual demonstration of how unstable p-values are across samples

    knowledgesale, 2011-12 · Strong recommendation · in “Ask HN: What interesting non-intuitive things do you know?”

  2. “absolutely fantastic and well worth watching”

    Dance of the p values demonstration on significance testing

    po, 2015-02 · Strong recommendation · in “Psychology Journal Bans Significance Testing”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: p-values, nhst, statistics, estimation, replication

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