P-values and the role of chance

Format: Researchers

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Language/s: 3-4 - How certain is the evidence?

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Resource Link: View the Video

Target Audience: 2-9 Reviews of fair comparisons should be systematic

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Short Description:

Gilbert Welch’s 10-min video on p-values and assessing the likelihood that a difference between treatments is due to chance.

Key Concepts addressed:

• 1-11 Explanations about how treatments work can be wrong
• 1-2 Anecdotes are unreliable evidence
• 1-12 Dramatic treatment effects are rare

Details