# p-hacking

> p-value hacking.

[p-value](https://wiki.g15e.com/pages/p-value.txt) hacking.

> p-hacking refers to the misuse and abuse of analysis techniques and results in being fooled by [false positives](https://wiki.g15e.com/pages/False%20positive.txt).

## Types

- <Multiple testing problem>: 실험을 계속 반복하면 특이한 관찰이 나타날 가능성이 점점 높아지는 문제. 이 문제를 피하려면? See [False discovery rate](https://wiki.g15e.com/pages/False%20discovery%20rate.txt)
- [p-value](https://wiki.g15e.com/pages/p-value.txt)가 기대하는 값(예: 0.05)보다 아슬아슬하게 큰 경우, p-value가 낮아지길 기대하며 데이터를 좀 더 추가해보기. 이 문제를 피하려면 실험 전에 적절한 <표본 크기>를 미리 계산할 것. 참고: [검정력](https://wiki.g15e.com/pages/Power%20(statistics.txt))

## External links:

- [p-hacking: What it is and how to avoid it!](https://www.youtube.com/watch?v=HDCOUXE3HMM&list=PLblh5JKOoLUK0FLuzwntyYI10UQFUhsY9&index=14)