The Limits of p‐Hacking: Some Thought Experiments
Abstract
Suppose that the 300+ published asset pricing factors are all spurious. How much p ‐hacking is required to produce these factors? If 10,000 researchers generate eight factors every day, it takes hundreds of years. This is because dozens of published t ‐statistics exceed 6.0, while the corresponding p ‐value is infinitesimal, implying an astronomical amount of p ‐hacking in a general model. More structure implies that p ‐hacking cannot address...
Paper Details
Title
The Limits of p‐Hacking: Some Thought Experiments
Published Date
May 17, 2021
Journal
Volume
76
Issue
5
Pages
2447 - 2480
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