Statistical Power, Clearly Explained!!!

Statistical Power is one of those things that sounds so fancy and, well, "Powerful", but it's actually a really simple concept and this video explains it so it's clear as day.

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0:00 Awesome song and introduction
0:37 Concepts of Statistical Power
3:19 Definition of Statistical Power
4:57 Overlap and Statistical Power
6:35 Sample size and Statistical Power
7:03 Summary of concepts

#statquest #statistics

[statquest]

NOTE: This StatQuest was brought to you, in part, by a generous donation from TRIPLE BAM!!! members: M. Scola, N. Thomson, X. Liu, J. Lombana, A. Doss, A. Takeh, J. Butt. Thank you!!!!

[ktburger]

I’m watching this and tears are coming to my eyes. So many classes where I felt so dumb. But I just needed it explained a certain way. I can’t thank you enough for your videos, I’m going to share them with everyone I know doing stats

[socratic-programmer]

You are a truly gifted teacher. Thanks a lot for this video! I feel like statistics is that much more approachable thanks to this channel :)

[datajunkie]

I have just had a StatQuest Marathon today. You are one of my favourite teachers on Youtube for knowledge. Thank you sir!

[skanvish]

You are an amazing teacher. Here I am preparing for interviews many years after I left school, .. instead of referring to my notes from school, i am watching your videos. A big thank you to you !!

[parttimemusic]

Omg ! I should have waited and take stats inference course this sem instead of last semester. This video is awesome ! I finally understand power now! Keep the hard work up Josh!

[beigpodcast]

You explained the concept in a very simple, explicit, and fun way. Thank you.

[ShubhamSingh-utnh]

You are awesome in every awesome way possible
The way you incorporate details of sample size in statistics is so great

[Justice_King]

Very comprehensive explanation to get the insight even for beginners. At the same time, I also had fun. My heartfelt thanks to you Sir!

[marjiehoss]

Dang I cant reject the awesomeness of these videos

[vcwocqv]

Your videos are the best I’ve seen. I’m working through a python for data science course…your explanations are fantastic and the animations make the concepts so easy to understand for applying with python. I can’t thank you enough for sharing!

[saneeshcs]

Last week my professor told me that we don't power to explain a result. I wondered the powerful one in the group says we don't have power. That powerlessness took me here. Thanks a lot for explaining power so clearly. She (professor) is powerful again, because she understood it. Thanks again.

[tomp]

Wow, this short video has explained to me what a 2 hour lecture failed to explain! Thankyou so much

[katherineannnguyen]

bro i could literally watch these videos for fun they're so good

[farsikogama]

Dude, I really want to purchase your book after watching some of your videos!! Great job in explaining

[apoorvarawat]

I love the way you
But honestly I love your opening!
"There's clouds outside... But who cares.... It's time for Stat Quest... STATQUEST... "

[iqbahm]

Awsome video. No one else ever explained me so simply what "Power of a study" is.

[arimorrison]

When the Null Hypothesis says "subscribe to my channel for more stat videos, " my small p-value says "I will continue to watch your videos without subscribing!" MEDIUM BAM

[gowthammurali]

From this video i get to know that increase in power will decrease the type 1 error. May i right Mr.jos..

What a intutive video man...salute for your knowledge sharing....

[maggiehuang]

When you are driving in the rain, you can kinda see where you are going(how I felt about statistics before your video), the wind shield wiper is still necessary because it makes everything clearer (that's how your videos are to me).

Confession: I was rolling my eyes when the cheesy BAM!!!s came out.