Covariance, Clearly Explained!!! скачать в хорошем качестве

Covariance, Clearly Explained!!!

Covariance is one of those statistical terms that you might have heard before but didn't quite understand. It sounds fancy, but it's really quite simple and it is a computational stepping stone to many other interesting concepts like correlation. This video describes covariance, what it does and doesn't do, how it's computed, and why it is more useful as a computational stepping stone rather than an end in itself. NOTE: This StatQuest assumes you already know about "variance". If not check out the quest:    • Calculating the Mean, Variance and St...   And if you are interested in Part 2, which explains Correlation, here's the link:    • Pearson's Correlation, Clearly Explai...   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:   / statquest   ...or... YouTube Membership:    / @statquest   ...buying one of my books, 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:   / joshuastarmer   0:00 Awesome song and introduction 0:24 Review of variance 1:07 Motivation for Covariance 5:59 Types of Covariance relationships 7:32 How to calculate covariance 17:00 Why covariance is hard to interpret 20:31 Motivation for Correlation 21:20 Summary Correction: 16:45 We should be dividing by 4-1, not 5-1. Oops! :) #statquest #covariance