Hypothesis Testing and The Null Hypothesis, Clearly Explained!!!

[@statquest]

NOTE: At 7:49 I meant to say Drug C instead of Drug A. Support StatQuest by buying my book The StatQuest Illustrated Guide to Machine Learning or a Study Guide or Merch!!! statquest.org/statquest-store/

[@GauravSharma-ui4yd]

Hey josh i suggest you to write a book on everything you explained in your ML and prob&stats playlist. It will surely be a triple baaammm in the community. And also going to be best seller.

[@statquest]

One day I'll do that.

[@MrSmarthunky]

@@statquest We are waiting! :)

[@heplaysguitar1090]

@@GauravSharma-ui4yd Definitely, I was thinking the same, best seller without a doubt.

[@aspergale9836]

If only there was some nice feature to add quick, like, _annotations_ to videos to point out small stuff like that. Jeez, my hidden genius is scary =_= /s @KZbin

[@becca2239]

"I'm not going to name names", hilarious 🤣️

[@statquest]

:)

[@omkargowda5764]

@@statquest have you created a detailed video on inferential statistics ????? (•‿•)

[@statquest]

@@omkargowda5764 I believe this video would quality as a detailed video on inferential statistics.

[@crjacinro]

COVID 19

[@acruzp]

You know what I love about your channel Josh? You've made a real effort to get to the bottom of these concepts. It's beautiful to see such attention to detail and love for a subject.

[@statquest]

Wow, thank you!

[@miale3425]

Videos on platforms that require subscription fees are not even a tiny bit to your content 😂👏Thank you so much for the work!!

[@statquest]

Thank you very much! :)

[@88skewer]

really want to give you a big warm hug. You not only tought me these concept, now I am even confidence enough to explain these to someone else

[@statquest]

BAM! That is awesome.

[@arvind31459]

Josh doesn't accept hugs but BAMS!!

[@ThatDudeUKChronicles]

I literally watched your Statistics Fundamentals playlist in 2 days. It was too much of wisdom. I need to sit back, go through my notes again. Crazy crazy learning. Thank you so much for putting so many efforts that you made them look so effortless. Thank you, sir!

[@statquest]

BAM! :)

[@praneethsaitunuguntla7751]

I started my machine learning journey a week ago confused with all the math involved and I found a extremely understandable way here .Thank you John Starmer you are really great..

[@statquest]

Glad it was helpful!

[@Teawos98]

how is your journey going . Just started mine today

[@lucretiuscoleman8224]

yeah, how's it going? i think i'm halfway ready to apply for my first DS job

[@ab_intel5281]

My favorite hobby of the quarantine is to watch statquest and make notes. Very grateful to you Josh...

[@statquest]

bam!

[@alexw31415]

Josh's voice is so cathartic to listen to and there's a perfect balance of learning at a great pace with minor sarcasm/banter that makes these videos so easy to binge and learn from. Thank you sir.

[@statquest]

Thank you so much! BAM! :)

[@alexw31415]

And I'm extra impressed to see that you read and respond to comments on 3-year-old videos! That's a lost art in the KZbin-verse. Double BAM!

[@mainulislam6765]

it just hit me that I laughed five times while learning statistics from this video. So far statistics lessons were about frowning and what not. BAM!!!

[@statquest]

Bam! :)

[@okonalbert]

This is the best statistics class I have ever been in, you break it down in a constructivist way, such that any rookie can understand

[@statquest]

Thank you!

[@actualBIAS]

Josh... and all of you friendly folks of the genetics department. Thank you guys SO MUCH for your great work. Thanks to you I learned so much in an intuitive way.

[@statquest]

bam! :)

[@RealSlimShady7]

For me, it has been StatQuest in the morning, afternoon, and night! This is Amazing!!! Who would have thought Stats and ML would be fun!! BAMMM! Thank you Josh :D

[@statquest]

Hooray!!! I'm glad you're enjoying StatQuest! :)

[@RealSlimShady7]

@@statquest All the time :)

[@soliloquy1774]

Will take my comps exam for grad school this coming saturday. Been using your videos to brush up on quanti methods. As a visual person, is so helpful. Thank you so much! Wish me luck! :D

[@statquest]

Best of luck!

[@rvvanani8252]

You're the Best.......It's like watching fun videos but in the end, we get amazing knowledge. Keep doing such amazing work.

[@statquest]

Thank you so much 😀

[@MrRuhll]

really appreciate your work mate! all videos so well explained using a light speech. wish you the best

[@statquest]

Thank you very much! :)

[@Grillpander]

I've learned something today.

[@statquest]

Hooray! :)

[@sivaramakrishnanr3790]

@@statquest 000000⁰⁰⁰⁰⁰000⁰⁰⁰0⁰⁰0⁰0⁰0

[@karnaghose4784]

You explained better than my college lecturer

[@statquest]

Thanks!

[@DrThalesAlexandre]

This is the best explanation on the null hypothesis I have seen so far.

[@statquest]

Thank you!

[@SaidakbarP]

Thank you Josh. This is a beautiful explanation. It goes to the very fundamentals of statistics with easy to understand examples. I have an upcoming data science interview, so I am refreshing my stat skills. Your channel is the best place to learn stats!

[@statquest]

Glad it was helpful!

[@elsabetbogale7227]

i love this, i actually understand bless your heart

[@statquest]

Thanks!

[@sachithgomes2672]

When Knowledge and Entertainment are found together in one place. 🤩

[@statquest]

bam! :)

[@thanhtrungnguyen4722]

amazing, start the day with StatQuest videos, so excited!

[@statquest]

Hooray!

[@theyreeatingthedoggs]

Thank you, Josh! Great, simple introduction to hypothesis testing.

[@statquest]

Glad you liked it!

[@AnkurBhase]

I'll be honest. I watch your videos waiting for the BAM and forget to focus on the concept! Then I've to go back all over again! 😂😂😂

[@statquest]

BAM!

[@vectors1970]

Finally found the god of statistics

[@statquest]

:)

[@notme7310]

This is so good! Thank you so much! I tried watching other videos about this but none could explain it well as you do nor keep my attention long enough.

[@statquest]

Thank you!

[@virendrakumar-fx7se]

Every video of urs is really helpful to understand the concept..adding fun to teaching is really helpful.

[@statquest]

Thanks!

[@MegnaUnni]

fantabulous class....a big salute

[@statquest]

Thanks!

[@MrMertcam]

Thanks, now I mixed up all I have ever known about hypothesis!

[@statquest]

Does that mean that this video helped you understand hypothesis testing, or did it just make things more confusing?

[@maessonmlo]

Thanks for sharing this wonderful video. See you!

[@statquest]

Thanks!

[@rishiraj8101]

wow! indeed clearly explained, Josh.

[@statquest]

Thank you! :)

[@leassis91]

thank you for taking all the time to explain the little things, it really helps!

[@statquest]

Thank you very much! :)

[@rittikabose]

You have all the ways to make learning interesting and fun, even the kids will also feel like knowing Statistics now !!!

[@statquest]

Glad you think so!

[@rittikabose]

@@statquest Can you post some interview materials? It will be of great help. I attended an interview where I was asked about the different testing methods and KPIs based on different data situations.

[@statquest]

@@rittikabose I need people to send me their interview questions. Can you send me yours: statquest.org/contact/

[@wildboy747]

Jesus thank you man! I finally understand that null hypothesis it was tricky for me

[@statquest]

Bam! :)

[@pranayshridhar9980]

your the best professor i ever had 👍

[@statquest]

Thanks! 😃

[@abhisheksaini1872]

Thank you sooooo much. You are a savior. The way you make complex things easy to understand is just amazing. Once again thank you so much ! :-))

[@statquest]

Glad it helped!

[@pradnya173]

You are such a cool teacher! Thank you

[@statquest]

Thank you! 😃!

[@afihaileywibowo1095]

You know, I'm going to learn the chords of that cute intro! 😊

[@statquest]

C, Aminor, G, C. BAM! :) (NOTE: They might sound a little different played on a normal guitar. The notes will be the same, but the order they are played might be different.)

[@Norainjoe]

Hilarious! I've never lol'd on a stats video before

[@statquest]

Bam! :)

[@abidaakter6863]

Very helpful video!

[@statquest]

Thanks!

[@himankaghosh7307]

Great concept explanation

[@statquest]

Glad you liked it!

[@ishitaarora281]

your intros are the best

[@statquest]

Thanks!

[@uhdorables2289]

these videos are amazing! you explained better than my statistics professor can. You earned a new subscriber! keep up the great work :D

[@statquest]

Thanks, will do!

[@aryananand5089]

Literally I have an exam tomorrow. You’ve been a lifesaver!

[@statquest]

Good luck! :)

[@-why6039]

Me seeing this comment a night before my exam: 👁👄👁 same bruh (ik it’s late reply but whatever)

[@aryananand5089]

@@-why6039 hahaha i get it :,)

[@-why6039]

@@aryananand5089 ikr! Statistics is 😭

[@aryananand5089]

@@-why6039 all the best! 😊✨

[@mintsss872]

I love the songs that are at the start of every video

[@statquest]

Thank you!

[@mdabdullahalhasib1730]

Lovely BAM!!!!! from Bangladesh...

[@statquest]

Thanks!

[@maxjohnson7623]

thank you so much for your videos

[@statquest]

Thank you!

[@NishantSewgobind]

Thank you for the wonderful and clear explanation! Very useful!

[@statquest]

Glad you enjoyed it!

[@HalfHotHalfCold]

Using your page as a review for a job interview

[@statquest]

Good luck! :)

[@esther1994]

Thank you very much.

[@statquest]

:)

[@delzosmith9240]

"I'm not going to name names" ooooh spicy time

[@statquest]

:)

[@dillman4170]

Great Video! Very well explained. You are helping a lot of people

[@statquest]

Glad you think so!

[@sarahussein7616]

Your channel is so bammm 🔥🔥❤️

[@statquest]

bam! :)

[@sillyfarmerbilly8872]

I'm supposed to be working, but I keep watching these

[@statquest]

BAM! :)

[@bharanidharanbalu]

Thanks Mr Josh for the wonder video.... You are taking lots of effects to make the video....... your clarity of explanation is really good ..... possible do it for anomaly detection in time series ........Thanks a lot for making more videos.

[@statquest]

Thank you very much! :)

[@alexey9624]

Of course like! Awesome lectures! Explained very clearly and easily - the best I found. Unfortunately, I did not find anything 'clearly explained' at the channel about Markov models.

[@statquest]

Markov Models are on the to-do list.

[@alexey9624]

Great! And is a theory of random processes on the list?

[@lauraliu2996]

The reason I always click your video is just because I want to hear you singing

[@statquest]

You have great taste in singing! :)

[@karangadgil9847]

made it so easy to comprehend

[@statquest]

Thanks!

[@edmundchan8923]

Thanks you for the video. It always refreshes my mind

[@statquest]

Thank you! :)

[@Rohan-ce1sy]

Thanks Josh for the intuition & crystal clear explanation for Hypothesis Testing - one of the toughest topics to explain to someone. TRIPLE BAM !!! @statquest Your explanation is better than any other resources FREE or PAID on the whole Internet. TRIPLE BAM !!! @statquest

[@statquest]

Thanks!

[@Letslearntogetheruzh7]

0:15 8:13rem 9:54 10:51 12:17 13:51

[@raj-nz4bj]

I am your fan . Great help in machine learning

[@statquest]

Thank you! :)

[@fahimmahmud3115]

I so wish I could meet you in person. You are just great!

[@statquest]

Thanks!

[@nikitapatel9563]

After... Watching this video I feel relax.. that. I knw. Something.. clearly

[@statquest]

Hooray! :)

[@neuodev]

Triple Bam 💥 !! Awesome Video for hypthesis testing

[@statquest]

Thanks!

[@jennyfu720]

thanks for this video

[@statquest]

Thanks!

[@sonam2288]

Hello Sir, thank you so much for explaining it so well. The examples given by you makes is so easy for us understand it. You are amazing! Thank you 😊

[@statquest]

Thanks!

[@janbenedictsaldana6613]

Your videos really help me a lot. Thank you very much. I'll also be showing these videos to my students=)

[@statquest]

Awesome! :)

[@gissellevargas3551]

You are the absolute best!

[@statquest]

Thank you very much! :)

[@anitawaris3850]

LOL i don't know about you but i absolutely love the intro

[@statquest]

Bam! :)

[@lizshale4349]

i do learn a lot from you and enjoy much fun!!!Thank you Josh!!!!!!!!!!!!

[@statquest]

Awesome, thank you!

[@ThaneswarMusahari]

Thank you sir

[@statquest]

Welcome!

[@viduradias4646]

Thank you!!

[@statquest]

:)

[@yufeizhan726]

This is REALLY helpful.

[@statquest]

Thank you! :)

[@oguve278]

Thanks for the Great Video! Would it still be considered a Null Hypothesis if it was phrased “People taking Drug C do not need fewer hours to recover than those who take Drug D” ?

[@statquest]

Yes, that would be called a "one-sided test". However, generally speaking, one sided tests are more trouble than they are worth.

[@ShermanSitter]

Great timing! Right after our discussion on NHST! :) ...another great video!

[@ShermanSitter]

PS. You probably already caught this, but I believe there is typo at 7:50 ("drug A", but meaning drug C?)

[@statquest]

Thanks for catching that. I added it to a pinned comment.

[@hanshernandez5513]

Amazing videos! I just iked and subscribed double BAM!

[@statquest]

Hooray! Thank you! :)

[@quinamasarira2116]

Thank you

[@statquest]

:)

[@sriramcharan180]

Excellent explanation

[@statquest]

Glad you think so!

[@santoshgujar5237]

Thank you, Sir

[@statquest]

Bam! :)

[@thisisvickyge]

Really love your videos!!!

[@statquest]

Thank you! :)

[@dolldrums]

trying to understand null hypothesis no one was explaining it as thoroughly as u thanks ! 🙏🏼🫶🏼

[@statquest]

Happy to help!

[@krishnavamsi3079]

Good one!!

[@statquest]

Thanks!

[@mc_v6237]

Your stat fundamental series realy helped me understand the basics of hypothesis testing, huge thanks for that! I searched for a video explaining the mathematical logic behind z and t test but found no one that realy explained the Details in an understandable way. Would you mabey consider making a video based on all the stuff you allready explained but connecting the dots and other neccecary details for z and t tests? Would be great if you'd think about it. (Unless you allready made one and I just didnt found it^^)

[@statquest]

You know, one day I would love to do a proper video on t-tests. For now, however, the only thing I have is a video that shows you that the logic behind t-tests is the same exact logic behind linear regression, which is also the same exact logic behind ANOVA and a bunch of other tests (some of which don't even have names). For details, first learn about linear regression... kzbin.info/www/bejne/pJyVdIR_idKSm9E and then learn how it naturally extends to t-tests... kzbin.info/www/bejne/hHeYkJWqhMZ2n8k

[@tribalstyle138]

Josh- what about scientific hypotheses regarding forensic cases- where the null necessarily must point to 'not guilty' and therefore a fingerprint match null would be "different" and the alt "not different"!

[@statquest]

I'm not 100% sure I understand your question, but you could imagine using DNA and saying "the null is that these two samples are the same" and then showing that there are enough differences to reject that hypothesis.

[@konstantinlevin8651]

makes a lot of sense

[@statquest]

bam! :)

[@pinklady7184]

I bet all your favourite nursery rhymes are all about all maths. Your kids and cat surely love your math songs.

[@statquest]

:)

[@albertocaruso6968]

Sei veramente bravo, you are very smart. Thanks!

[@statquest]

Grazie! :)

[@vikram90ful]

Thanks Josh, you made my day! thanks

[@statquest]

Hooray! :)

[@hungariantornado]

thank you!!!

[@statquest]

:)

[@jiinglesgreen3869]

Woh man, great content.

[@statquest]

Thanks!

[@keelhuff]

Thank you! I'll be back.

[@statquest]

Hooray! :)

[@damini007]

Thank you so muchh:)

[@statquest]

Thanks!

[@leyougetabebetaye7232]

Thanks

[@statquest]

Happy to help! :)

[@swapnilchavan7076]

Thank you josh .... You are wonderfulllll😊

[@statquest]

Thank you very much! :)

[@tawiwutcharuwat8999]

Thank you so much!

[@statquest]

You're welcome!

[@m.kd12]

thanks !!

[@statquest]

:)

[@dante911ify]

Great video however, I have a question. Throughtout the video, you used the phrase "random differences" for factors like Better diet, more exercise, (or may be some genetic mutation) which affect recovery time but are these factors really random ? These factors may be unknown to the experimenter but is it a good idea to consider them random ? I mean the phrase "Drug A may perform better than Drug B due to chance" doesn't make sense considering there would be deterministic reasons with mechanical explanations which would explain the action of the drugs

[@statquest]

I agree, statisticians use words like "random" and "error" in strange ways. However, in the language of statistics, "random" means "things we didn't factor into the model". Unfortunately, that's just the way they use the term and there's not much we can do about it.

[@dante911ify]

@@statquest thank you for the answer

[@rhamz8880]

Nice im no longer confused.

[@statquest]

bam!