In order to use general linear models (GLMs) you need to create design matrices. At first, these can seem intimidating, but this StatQuest puts together a bunch of examples and illustrates them all so that they are clearly explained. The examples in this video are worked out in R in this video: https://www.youtube.com/watch?v=Hrr2anyK_5s 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: null ...buy my book, a study guide, a t-shirt or hoodie, or a song from the StatQuest store... https://statquest.org/statquest-store/ ...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 #statquest #glm #statistics