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What is a P Value? What does it tell us?

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Discussion about the p value... what it means and how to interpret it. If the null were true! reject or fail to reject?
Категория: Люди и блоги
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Текстовые комментарии (415)
Techn0 for life (4 часа назад)
I need this guy to lecture at my University :D
Augusto D'Arruda (6 часов назад)
Cruz Philipp (10 дней назад)
mamatha tr (11 дней назад)
this is just amazing !!! it would be great if you could also give difference between pvalue and probability for the same example
Vishal V (14 дней назад)
6:32 ahmygawd 😂...where can I find teachers like him? This is my favorite tutorial on the web!
Rafat Ul Hauque (17 дней назад)
Dude you're amazing!
jpalquisola (22 дня назад)
hi from 2018
Arthur A B Dias (23 дня назад)
Very nice, thank you man, honestly.
Tomasz Kostyra (29 дней назад)
.'..and I am rejecting that NULL and I'm going with the alternative and so SHOULD you YEAHHHHH!!!' I love this :D
Casey Turner (30 дней назад)
You are awesome!! Over a decade of confusion resolved in 10 minutes!!! I "bend the knee"
Goahead (1 месяц назад)
You're a great teacher!
Marius Myhre (1 месяц назад)
I wonder why so many of the explanations you find on youtube are so bloody convoluted...you made it extremely easy to understand.
Marius Myhre (1 месяц назад)
Wow, your pedagogical skills are awesome. You must have very happy students indeed :)
sarah naffa (1 месяц назад)
you're a gem. I never liked numbers and u sir, are just amazing. thank u
Misbah Majeed (1 месяц назад)
Lau Kyle (1 месяц назад)
MrNystrom the legend of Statistics, please indulge us with more stat videos!
Kulbir Ahluwalia (1 месяц назад)
Your passion to explain it with full feeling is commendable
Sara Fedaei (1 месяц назад)
Great video. Also you kinda look like Mo Salah
Zingo311 (1 месяц назад)
Lauren Shadle (2 месяца назад)
Wow, thank you for this video! This was so helpful!
Hugo Zeilt (2 месяца назад)
You made my understanding of p value better. Thanks for sharing. As a foot note, suppose my null hypothesis is that Jack Black watched too many of your videos and actually, Jack Black has become popular by imitating you. Opposing that, is my alternative hypothesis, Jack Black is cool, and imitating Jack Black is also cool, but not as cool as Jack, because ... Jack Black. Can we devise an experiment/measurement parameter that will give us that low P value I expect. IE Jack Black is genuine. I propose a Jack Black contest, where viewers create Youtube videos showing of their Jack Blackness, and by voting we try to solve which hypothesis is most likely. Hey just my 2 cents.
Oscar Chong (2 месяца назад)
I can see your passion!
Angel Trevino (2 месяца назад)
Love all your videos! Great refresher!!
shareth Kumar (2 месяца назад)
exactly i feel it too... jack black of statistics. Thanks man,,,, it was helpful. I am subscribing ;)
Ayush Koul (2 месяца назад)
Hi MrNystrom, I understand the who concept of rejecting null if the p-value is too low (because it is highly unlikely to get results like the one you got given the null is true and the fact that you DID means the null is false). What I don't get is, why do you calculate the p-value for getting results "at least as extreme as the ones you got" meaning why do you take the area under the curve from the critical value to infinity. Wouldn't it make sense to just find the probability of getting results like the ones you got and not "atleast" like the ones you got?
Omid Heidari (2 месяца назад)
haha, he is so funny. especially when he mimicked students faces
Y Fish (2 месяца назад)
Wrong. Prob (10 tails in 10 flips of a fair coin) is EXACTLY THE SAME as the Prob (5 tails and 5 heads in 10 flips of a fair coin).
Vinit Saini (2 месяца назад)
Usually P-value lies between 0 and 1 but for one of my test I'm getting P-value exactly 0.00. Is it valid first of all? also, what does it signify P-val = 0 ?
The Passionly Passionate Nightman (2 месяца назад)
When did Paul Rudd start teaching stats?
Pooyan Momen (2 месяца назад)
Yo, I watched so many other videos yet did not get P value... until I watched yours... you rock .. Thanks
Yiheng Zhou (2 месяца назад)
u sir will be a successful stand up comedian
Eden Davenport (2 месяца назад)
So so helpful thank you for making these
Илья Филинов (2 месяца назад)
u are very cool teacher
Bernard Jones (2 месяца назад)
Love this video. A ho and a ha, lol. I love it !!!
Chidera Uwakwe (3 месяца назад)
Kim Hansson (3 месяца назад)
Thiere are quiet a few people teaching statistics but this guy has an ability of making it interesting and entertaining! Thank you! God Bless!
Abdo Mansoor (3 месяца назад)
Wow motivating inspirational teaching approach..... never seen that special teaching technique before.
Melanie Manning (3 месяца назад)
Best. stats. video. ever. THANK YOU !!
RyanDeWitt (3 месяца назад)
Thank you! I tried to say what I learned from you in 60 seconds. You are hilarious, liked and subbed Nystrom. https://www.youtube.com/watch?v=Q7KqdxeiR8g
Hoan Tran (4 месяца назад)
can I just rephrase what u are saying in term of "t" is that if the null hypothesis was true... then the value t will fall into (assuming p-value 0.01) P (-t1 < t < t1) = 99% instead of 95% (alpha = 5%) so we can reject the null hypothesis. is this correct ?.
himanshu dagar (4 месяца назад)
Hey man, you should be an actor. LOL
Neil Agarwal (4 месяца назад)
thought it was Paul Rudd in the thumbnail. :'D
The Crafty Witch (4 месяца назад)
This was the last part I had to "get" pre exam!....Annnnnnnnnnd I now "get" it lol ty ty
Lau Kyle (4 месяца назад)
If he tells me the alien is coming, I prolly believe it.
E P Tri (4 месяца назад)
I forget my undergrad statistics, but can anyone remind me on formulating Hypotheses in this sense? So I come up with a null hypothesis (that's usually status quo as I understand?).. and then the HA is sort of the inverse of the null. My question is: does the testing have to be binary in nature? Like in this case, the coin can either only be fair or NOT fair. Is there such a thing as testing for multiple scenarios? Like perhaps there would be Null H, HA1, HA2, etc? Thanks in advance
Steven Scott (5 месяцев назад)
Jesus, dude! In 10 minutes, you explained something that my professor couldn't in an entire semester. Awesome job!!
wibi Youtube (5 месяцев назад)
You are the best mate. That is amazing. Thank you very much for this video
Vaibhav Lodha (5 месяцев назад)
I am studying this stuff for the first time and whatever you said went straight into my head. Thank you, this was an amazing tutorial.
Mazhar Imam Khan (5 месяцев назад)
you are an amazing teacher. Thanks
Om s (5 месяцев назад)
You are amazing. I wish my stats teacher in school was as funny as you.
Smart City Market (6 месяцев назад)
After watching the p-value explanation I just naturally clapped. This is something I never did before. Then I looked at the comments and realized many felt the same way. You will live forever sir.
ajbrou (6 месяцев назад)
Dayum! Such an awesome and energetic lesson, gets to the point pretty well and keeps you focused hahah. Im learning multiple linear regression in machine learning and have just ran across this what-the-fuck-is-this p-value. Helped a lot, you got yourself +1 subscriber, thanks man!
Jenny Meza (6 месяцев назад)
LOL Studying for finals. You were a great help!!
Rengemaru (6 месяцев назад)
I keep losing track of your jaws outline as your glorious beard merges with the darkness of your t-shirt!
oopalonga (6 месяцев назад)
thanks for explaining this--helped me A LOT. What about instances where calculating chance isn't so easy? I mean i read a lot of medical studies with P-values, and now i'm thinking, well how the hell on earth would you ever know the chance of something happening from the beginning? A fair coin is obvious--50/50, but complex life situations. . .MY GOD! so maybe then my question is this: should EVERY study have a P-value? say we want to test the effect of a drug on the body, and say our hypothesis is that the drug will increase heart rate. How do we know what "chance" would be in terms of a placebo increasing heart rate? wouldn't we have to first test a large sample size with something we "know" doesn't increase heart rate, such as a normal saline solution, and then measure when heart rate does increase, and then that serves as our baseline? (i.e., maybe 5% of people we inject have an increase in heart rate), and so now w/ our new drug we will know the P value? i dunno, im hella confused. And i feel like the more im learning, the more skeptical i'm becoming of research in general. I mean like even w/ my saline placebo idea for establishing a baseline--wouldn't we need a P-value for this as well? And fuck, doesn't the need for a p-value just go on ad infinitum? = /
oopalonga (6 месяцев назад)
great presentation--holy fuck man, well done, esp. for something typically considered very "dry"
jojo B (6 месяцев назад)
you are so brilliant,for the first time it becomes clear in my mind hahahahaha
pimphand83 (6 месяцев назад)
yes! good review before finals!
Lisa Lisa (6 месяцев назад)
am happy u use practical examples bien !!!!!!
Assad Benchiker (6 месяцев назад)
OMG!! Thank you brother.That was cool.
Spas-12 Collective (7 месяцев назад)
Now I question mario games p switch
Hala AlMossawi (7 месяцев назад)
thank you. so useful
Joe Lindenmayer (7 месяцев назад)
I was looking for some helpful videos for my stats students and behold I stumble upon you of all people! Fantastic video, I'll be sharing it today. Much love Mr Nystrom!
Joe Lindenmayer (7 месяцев назад)
All is very well! I currently have two semesters left at WSU with a Stats concentration and I plan on pursuing an actuary career upon completion. But in the mean time, I'm hosting PAL sessions to help students in our intro Stats courses. I had a really hard time explaining to them what a p-value was so thanks so much for the help!
MrNystrom (7 месяцев назад)
Joe Lindenmayer hey joe!! Hope all is well.. are you teaching??
Antoine Fauconneau (7 месяцев назад)
The p-value is *not* the probability that the null hypothesis is true. That's a common misconception.
Bryan Bernard (7 месяцев назад)
if that is presumably false, then please tell us what is it?
Bjarb J (7 месяцев назад)
This guy is so amazing. We need him in the world. MrNystorm for President.
sheila santiago (7 месяцев назад)
great video, I can conclude that this video is very helpful.. and entertaining ;)
Jill Valentine (7 месяцев назад)
let me explain in an example of relationsip when u said u love your GF it is H0(null hypothesis) and u don't love your GF anymore it is  Ha(alt hypothesis) but u need to tell yout GF how much u love her this is called P value
FancySmancyFancy (7 месяцев назад)
You are amazing
Rahul Shenoy (7 месяцев назад)
This is exactly how you teach statistics man. Keep up the good work man! :-)
Joseph Lloyd (7 месяцев назад)
shave your beard please, I didnt enjoy this one as much as the Regression video LOL xxx
Priscilla Hennecy (8 месяцев назад)
I watched so many different videos to understand the p-value. Then I watched yours and I finally understood it.
Stranger DE (8 месяцев назад)
you are a godsend
Debashish Gupta (8 месяцев назад)
Suburb explanation
Michael Haggerty (8 месяцев назад)
Dude you're hilarious... just laughed out loud in the library
p246784 (8 месяцев назад)
someone give that guy nobel
Sikander Malik (8 месяцев назад)
Kurt Russel teaching statistics
Husain Anas (8 месяцев назад)
love you buddy - a thank you from a whining 4th year econ student :P
MyDogisCroc Aodhan Frazee (9 месяцев назад)
Does this question only have one correct answer:As the test statistic becomes larger, the p-value ____________.I've been struggling to accept that it consistently has one response and is not situational or subject to interpretation.  If it only has one correct answer in all situations, can you explain?Thanks!
Rosa Contreras (9 месяцев назад)
Excelent..thanks for the explanation
12345a (9 месяцев назад)
I am so glad I found you swed
Heba Sameer el ghozaily (9 месяцев назад)
Wooow I finally understood what the*** is P-value
mcepedao (9 месяцев назад)
I love this guy.
El Fry (9 месяцев назад)
Great video dude, you're the man.
Chris Lee (9 месяцев назад)
This is brilliant. Randy Savage at the end.
Harinee Mosur (9 месяцев назад)
I have read this so many times but this is the guy who made it so simple and clear.Sir you are amazing !
aniket mahangare (10 месяцев назад)
If you look closely, This guy looks like Jon Snow. Specially his eyes. Very nice video btw..
Fei Chen (10 месяцев назад)
i went though a lot of materials trying to understand what's p-value is, !!! finally , you are amazing sir!
Pasquale Nicolò (10 месяцев назад)
Just great
L borate (10 месяцев назад)
This I am taking a college statistics class, between the professor, the stupid mystatlab, the book, and notes on Pearson videos, I have spent 8 hours TODAY trying to understand what this dude took 10 minutes to say... Fml
Fatma Mahmoud (10 месяцев назад)
you are the magician, sir. i hate statistics and i searched trying to understand the mathematical symbols but they are very easy with you. Go on, you are great. thank you
Jenson Cherian (10 месяцев назад)
Understood well!!!
James Young (10 месяцев назад)
This guy is great. With him...I got it. Thx Mr. Nystrom!!
Alex R (10 месяцев назад)
yo, P-value, maaaan!!!!
Yussuf Hajjaj (11 месяцев назад)
You helped me alot man, Thank you very much!
Avi Garg (11 месяцев назад)
nicely 👌 explained
Georgina Montes (11 месяцев назад)
When the P-value is low, the null must go
Gabe Kantor (11 месяцев назад)
your a boss
marchizaaa (11 месяцев назад)
I started from the scratch to learn about statistics. Your videos are very impressive and the way you explain is so easy-understanding. I've never thought to start thinking in a P-value way: the last minute is simply AWESOME, dude. :P
Saud Naeem (11 месяцев назад)
S Rand (1 год назад)
Finally, someone who I can understand. I get it now.

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