StatQuest: Linear Models Pt 1 - Linear Regression

The concepts behind linear regression, fitting a line to data with least squares and R-squared, are pretty darn simple, so let's get down to it! NOTE: This StatQuest comes with a companion video for how to do linear regression in R: https://youtu.be/u1cc1r_Y7M0 You can also find example code at the StatQuest github: https://github.com/StatQuest/linear_regression_demo ⭐ NOTE: When I code, I use Kite, a free AI-powered coding assistant that will help you code faster and smarter. The Kite plugin integrates with all the top editors and IDEs to give you smart completions and documentation while youre typing. I love it! https://www.kite.com/get-kite/?utm_medium=referral&utm_source=youtube&utm_campaign=statquest&utm_content=description-only 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... Patreon: https://www.patreon.com/statquest ...or... YouTube Membership: https://www.youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join ...a cool StatQuest t-shirt or sweatshirt (USA/Europe): https://teespring.com/stores/statquest (everywhere): https://www.redbubble.com/people/starmer/works/40421224-statquest-double-bam?asc=u&p=t-shirt ...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 0:37 The Main Ideas!!! 1:12 Review of fitting a line to data 4:00 Review of R-squared 12:13 R-squared for a multivariable model 14:16 Why adding variables will never reduce R-squared 16:08 Calculating a p-value for R-squared 25:26 The F-distribution #statquest #regression