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Alternative Hypotheses: Main Ideas!!!

In Statistics, when we do Hypothesis Testing, we are supposed to have two hypotheses: A primary, or Null Hypothesis and an Alternative Hypothesis. This StatQuest explains why we need the Alternative Hypothesis, even though Hypothesis Testing tends to focus on the Null. NOTE: This StatQuest follows up on Hypothesis Testing and the Null Hypothesis:    • Hypothesis Testing and The Null Hypot...   And if you'd like to learn about p-values, check out... p-values: What they are and how to interpret them:    • p-values: What they are and how to in...   How to Calculate p-values:    • How to calculate p-values   Lastly, if you would like to learn about Statistical Tests, see:    • Linear Regression and Linear Models   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... Buying my book, 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:   / statquest   ...or... YouTube Membership:    / @statquest   ...a cool StatQuest t-shirt or sweatshirt: https://shop.spreadshirt.com/statques... ...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:   / joshuastarmer   0:00 Awesome song and introduction 1:49 The Alternative Hypothesis 3:21 Testing the Null vs Alternative for 2 groups 5:38 Testing the Null vs Alternative for 3 or more groups 8:00 Summary and next steps #StatQuest #AlternativeHypothesis