Expected Values, Main Ideas!!!

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Expected values are part of the foundation of statistics and the reason why casinos don't go out of business all the time. Here, we walk through two examples that explain the concepts behind Expected Values and its fancy looking notation. BAM!

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0:00 Awesome song and introduction
5:09 Calculating an Expected Value
8:02 Expected Value notation
10:30 A more complicated example of Expected Values

#StatQuest #Statistics #ExpectedValue
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I binged your Statquest stat fundamentals and just finished it. Can't express how much it has helped me build a sense and create a solid base for my ongoing data science masters. The older i grow, the more i realize that in some areas of life, it is best to treat adults like the children they actually are in these specific areas. Unbelievably efficient. You're an amazing teacher who deeply understood how much repetition & maintaining a trail of thought is key (+ bite sized format). I managed to grasp an in depth understanding of most concepts with rarely if ever having to rewind thanks to the number of times you repeat and synthesize key notions. THANKS JOSH !!

(Also you're hilarious, and i genuinely love your music and overall vibe, i been going through rough times health & study wise and just can't believe how you made my week, and how you made me enjoy learning probas/stats again)
Cheers ♥

apah
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Actually 100% of people in StatLand have heard of Troll 2 because you went around and asked everyone if they've heard of Troll 2 :)

efunchen
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I got very curious about Troll 2 and looked it up on the trivia part of the IMDB page it says :
"The entire cast went to a casting call hoping to be extras, and ended up in lead roles."
You can just imagine for yourself how the trailer looked like.

mhdamayri
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Statistics at 10pm on a Sunday!? You better believe it! Woo!

_buckles up_

cwtrain
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Explaining clearly the expected values … I clearly understood them. Well done your mission is accomplished!

danspeed
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I wish professors in universities taught in this way. Thanks for making statistics so accessible. I felt very frustrated when I came here but now I am motivated to learn.

kimiko
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As someone who started to learn to code, and then data analysis and now dying to learn about ML in her 45 without any relevant background, your videos are life saver! I can understand all and I am enjoying it! You make me want to learn more. Thanks a lot!!!

aysenurfidan
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Great video. Can't wait to understand the n-1 thing. I've been waiting to understand that for a long time!

ScottEdwards
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Your method of explaining concepts is unique. You made me love probability and statistics. Thank you a lot. 🌷

nicolasabboud
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Bro, where was this channel all my life, cant believe I'm now stumbling upon this channel. Great Great style of teaching 👍

justingomez
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I saw a genius here today; he explained complex concepts in simple way. Thanks!

mereraK
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I already watched a video before this one to explain what Expected Value meant but when I came across Statquest, I knew I had to definitely watch this video

I wasn’t disappointed. Your real-life adaptions for statistical concepts are really engaging, Josh!

Kudos!

ayomikunoyenuga
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isthere a better teacher than you on earth? i don't think so. you are absolutly amazing!! you master the art to make complicated things easy and pleasant. you are so wonderful!! thank you very much for all your efforts in those videos. each one is a gem!! be blessed!!

alainleclerc
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The moment he says "it's time for Shameless self promotion" lololol!

AJK-ajk
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Very clearly explained, thank you! Looking forward to the other videos in this series! StatSquatch FTW! 😄

chrisjm
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This is super helpful thank you much. I tried to read the textbook definition and it was way too boring/complicated to understand (doesn't explain enough) while your video just makes everything much clearer for me. Thanks!

kevinding
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bro thank you for all that effort to simplify things

blackmeteorite-rjvw
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Thank you, so clear explanation and an example about the usefulness of the expected value with the calculation of a bet profit!👍

teosurch
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I can't thank you enough! I owe you a lot... The world needs teachers like you 🙂

arc
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it's finally clear for me what the expected value means in practical. i'm amazed for it, Thank you so much!

jaquelinemoreira