p-hacking is the misuse and abuse of p-values and results in being fooled by false positives. Some forms of p-hacking are obvious, but other are much more subtle. In this video, we talk about two forms of p-hacking and how to avoid them. NOTE: This StatQuest assumes that you are already familiar with p-values, if not check out: p-values: What they are and how to interpret them: https://www.youtube.com/watch?v=vemZtEM63GY How to calculate p-values: https://www.youtube.com/watch?v=JQc3yx0-Q9E Also, if you'd like to learn more about FDR, check out the 'Quest: https://www.youtube.com/watch?v=K8LQSvtjcEo For a complete index of all the StatQuest videos, check out: https://statquest.org/video-index/ If you'd like to support StatQuest, please consider... Support StatQuest by buying The StatQuest Illustrated Guide to Machine Learning!!! PDF - https://statquest.gumroad.com/l/wvtmc Paperback - https://www.amazon.com/dp/B09ZCKR4H6 Kindle eBook - https://www.amazon.com/dp/B09ZG79HXC Patreon: https://www.patreon.com/statquest ...or... YouTube Membership: null ...a cool StatQuest t-shirt or sweatshirt: null ...buying one or two of my songs (or go large and get a whole album!) https://joshuastarmer.bandcamp.com/ ...or just donating to StatQuest! https://www.paypal.me/statquest Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter: https://twitter.com/joshuastarmer 0:00 Awesome song and introduction 0:28 Simple example of p-hacking 2:21 p-hacking defined 2:38 Multiple testing problem explained 7:29 Using FDR to compensate for multiple testing 8:52 A subtle form of p-hacking 11:26 Power analysis to prevent p-hacking 12:12 Summary of concepts #statquest #pvalue