Calculating the Confidence interval for a mean using a formula - statistics help

[@meems6382]

I learned more in this 5 minute video than I did in a 2 1/2 hour lecture last week, THANK YOU!

[@DrNic]

I'm pleased to hear it. It might be that it helped consolidate the lecture material. Either way it is great to help.

[@realdvgarg]

@@DrNic humble.

[@catherinej8819]

WAS LITERALLY ABOUT TO COMMENT THIS lowkey kinda mad that I woke up for an 8am lecture and felt really lost and confused and then watched this video and now I understand like why am I

[@alenjose3903]

@@catherinej8819 im coming from khan academy, he's done a horrible job too.

[@DrNic]

@@alenjose3903 Thanks for that. Khan is not a statistics teacher and teaches like a maths tutor which is quite different. I really appreciate it when people can see the difference.

[@user-zk3bc6cc2g]

This video is awesome. I recommend all of my professors to watch this before going to class!

[@edenbirku5552]

😂😂

[@notanape5415]

Damn bro!! Laughing so hard, I needed this :)

[@nazifataha8868]

Yes. Lmao

[@danspitalnik]

So much clearer than my lecturer. Thanks.

[@SarahCrookall]

Showing the actual table is incredibly helpful for us visual learners! Thank you!

[@johnstuart6002]

"You can read it from the table" *shows actual table

[@AhmadKaako]

Thanks a lot! Great statement for clarification at 4:19 about CI : "This is not the interval that will hold the weight of 95% of the apples in the orchard: It is the interval that we have 95% confidence will contain the true value of the population mean"

[@jokovik5492]

I have watched this video at least 10 times in the last couple of years, and each time I learn something new! Great video!

[@DrNic]

That’s great to hear. Thanks

[@studymapai]

Not all heroes wear capes. Thanks a lot. I’m watching this 4 hrs to my exam and you may have just saved me. 😂

[@DrNic]

Glad I could help!

[@fozangardezi6163]

I do not know how much time it would had taken to understand without this video.

[@AndronikosKoutroumpelis]

Aside from the excellent explanation, I love the humor!

[@henrybidar8065]

This video saved my life

[@tomwhitby5838]

+Henry Bidar Never thought STATS is this fun, my lecturer makes it painful but this is delightful

[@DrNic]

This video teaches the more traditional way to calculate confidence intervals. It still concentrates on conceptual understanding rather than mathematical methods.

[@Fastbub]

Statistics Learning Centre always a pleasure learn from those who really know how to teach ☺️

[@najla9180]

Thank you so much , you are my hero

[@swalihashanu5827]

Does this have any similarity with 'exact confidence interval for mean based on t distribution '??

[@DrNic]

@@swalihashanu5827 This is not a term I am familiar with. It is a confidence interval for a mean based on a t distribution. Not sure what they mean by "exact"

[@swalihashanu5827]

@@DrNic oohh...I see..Thanks a lott Ma'am for the clarification

[@DrINTJ]

1000 times better than Khan Academy nonsense.

[@TheMohit8055]

khan academy video was pretty confusing you are right .. .

[@hazimhuzaifah4359]

exactly right

[@MyteeBumbleBee]

Quite right Mohammed! Sometimes Khan's instructors over explain and fail to stay on point with the subject matter. The result is that I walk away more frustrated and confused than I did before watching the video! Dr. Nic keeps it simple and plain; the way I like to learn!

[@swaggyskye]

true that!!

[@harishsivaramakrishnan7096]

Khan academy exists just because it needs to exists! No purpose tho.

[@linoykohen5923]

Thank you very helpful almost at a 3rd grade level with your tone of voice and examples it makes it so much easier to understand

[@cindyo6298]

Wow, this is one of the clearest videos I've ever seen on KZbin, and it got right to the point. Excellent.

[@thesmiffable]

Honestly learned more about CIs in your two videos than an entire 4 year undergrad in biological sciences - It is taken for granted that you just know these things. Thanks for a well explained video.

[@WojciechowskaAnna]

I love when math is explained in more intuitive terms, focusing more on meaning and "connecting the dots" rather than strict deriving forumula after formula (even though its also needed), well done!

[@DrNic]

That is what I aim at, so it is gratifying to hear that I am succeeding.

[@kyleburr8453]

I wish you could make videos for all of my classes! You make everything so clear. Thank you.

[@DrNic]

I wish I could too! Any particular requests? ;)

[@ayosiku2]

You are a life saver. I hope you will continue to do this great work for years to come. i have been going through tons of tutorials and I find this refreshing. taking a data science course.

[@DrNic]

Great to hear!

[@inv8890]

....I have no words to describe your effort. ma'am, I with you love and happiness.

[@abhip4538]

If learning statistics is like mission impossible then you are tom cruise............... hats off

[@DrNic]

That has to be one of my favourite comments. Thank you.

[@abhip4538]

and u r my favorite teacher mam.......

[@dakshan]

THANK YOU SO MUCH! Aced my stats quiz thanks to you!

[@r4ts311]

Thank you SO MUCH, i can finally understand the logic behind all the gibberish in my book!! Saved my life

[@DrNic]

That is great to hear - I believe yours is not the first life I have saved in this way. ;)

[@adamitinerant]

Thank you for clarifying what hours of reading has made seem impenetrable.

[@ramielwan48]

As much as this explanation was simple as much as it was complex for the creator to produce. Appreciate the well put explanation.

[@DrNic]

Thanks - it can be difficult to make things seem simple. My son did a great job with the editting too.

[@mikemcmorris6078]

Epic approach to teaching, keen knowledge of learner needs, and effortless ability to teach complex concepts simply through common sense illustration. Respect for Dr. Nic!! So helpful, thank you.

[@DrNic]

Thanks - It has taken several years of teaching this material to get to this point. Nice it seems effortless.

[@TheMohit8055]

my lecturer is pretty bad and most of the time teaching himself …. this video was nice .. Thanks keep updating.

[@cajunninja8668]

I know I’m late, but you are a Godsend mam. I might actually be able to pass my class because of you. Thank you so so so so much!

[@tinahii7480]

Thank you so much. You just saved me for my upcoming stats exam.

[@akshittuli1211]

This is the best video about confidence intervals​ which I could find on KZbin !!

[@videoaks007]

Explained it in so simple and understand able way. Thanks. I wish my teachers made maths so simple and interesting. Thank you very much DR Nic

[@DrNic]

Glad it was helpful!

[@cade9491]

Thank you so much, u saved my Biostatistics exam

[@mahaprasadm9770]

Probably the best video on KZbin related to Confidence Interval!!!!!!!!!!

[@DrNic]

You are too kind. I actually think my earlier video, understanding confidence intervals is a little better. ;)

[@nihonarekun]

Been watching many statistics videos now, this one has been the only one that's made me smile xD

[@anan7b66]

Animations and especially those of the equations is just great. Helps a lot. Thank you.

[@cha1645]

Richard Funman is right. "If you cant teach it you dont understand it". We had poor teachers in our medical schools. I saw few KZbin videos worth a lot. Thanks.

[@DrNic]

Hi Richard, thanks - statistics really isn't easy to understand so it is not surprising that many people have trouble explaining it.

[@cha1645]

@@DrNic Richard was a Physics professor in US. Anyway u r right. Thanks

[@saichaithrik7134]

it is more helpful than my last week 2 hours online lecture

[@DrNic]

Glad to hear that

[@sediye]

this is great!, shocking , really. your voice and teaching ability makes it seem so simple. amazing!!!!!!

[@Saveg36]

statistics is actually so simple once you understand the concepts. some teachers bounce around too much and fail connect or distinguish different means and sds which is what my classmates and I struggled with.

[@DrNic]

It's true - there are just a few concepts to understand, particularly around samples and populations and once you understand them, the rest is mainly mathematics which can be done using a computer.

[@nazifataha8868]

Why didn't I come across this before? I learnt so much and got the basic idea of CI. Thank you so much

[@DrNic]

Glad it was helpful!

[@justinnottelling6148]

This was well explained and easily understood video. I am doing an online course, and this helped me understand the material so much better. THANK YOU!!

[@donibrasco1984]

very nice presentations in all of your videos. No extra words , nothing to confuse. Definitely recommendable to others.

[@syednusrath9631]

GREAT VIDEO. REALLY HELPS TO UNDERSTAND CONCEPTS BEHIND CONFIDENCE INTERVAL. THE ENTIRE TEAM OF Statistics Learning Centre IS TO BE CONGRATULATED. WISH TO CONTINUE THEIR ENDEAVOUR IN SIMPLIFING STATISTICAL METHODOLOGY

[@blobmarlis6180]

Great accent. I was in New Zealand for the first six months of the year. I'm already missing it!

[@timko6490]

Words cant explain how long it takes to find a youtube video that isn't a derrick like my lecturer. Thanks heaps!

[@DrNic]

Why thank you, Tim. I hope you can use some of the other videos as well.

[@stephanietorres6047]

The animations help a LOT! These videos saved me! THANK YOU!

[@blueninja7594]

You are amazing. I've been struggling for so long to learn this thing and now thanks to you it seems like a piece of cake! Thank you so much.

[@hazimhuzaifah4359]

simple to understand certain cases... very easy... thank you, its rare to have lecturer like you to makes this video

[@YourDad-dh6fj]

This saved me! Math has never been my strong suit, and biostatistics was killing me but this makes sense!

[@karunanidhimishra4222]

This video has one of the best explanations for CI.. Awesome

[@gonzaloalvarez3084]

On a table I refer to, for a sample size of 15 and confidence level of 95%, I get 2.131, your t value of 2.145 appears but for a sample size of 14. However, the explanation is fantastic.

[@DrNic]

Thanks. The number in the t-table is the degrees of freedom. For a confidence interval for a mean, the degrees of freedom is n-1 (or the sample size minus 1). That is why we look up 14, not 15. I realise at 2:25 this is a little confusing. At 2:14 I did put in that df is sample size - 1.

[@awaisahmad5908]

Thank you so much Dr. You are the best teacher. I have learned alot in your demonstration. Now i have cleared concepts about confidence interval and point estimator, standard error of mean and t value.

[@DrNic]

Glad to hear that

[@hemant8592]

nice presentation very helpful for quick recall

[@efeucar2115]

Wow, I am amazed by the fact that you made me understand that in 5 minutes. Our professor does that in 1 hour. :) Thank you so much!

[@DrNic]

Happy to help!

[@rashaelkhateeb8391]

Oh Thank you so much. I have spent a long time trying to understand my professor. Now I finally understand what he was trying to say but couldnt really communicate.

[@DrNic]

Glad it helped! You were probably nearly there and the video put it all together for you.

[@BloodBunn]

Guys why don't we just skip hours-long college lectures and learn it all here in 5 minutes?I have community medicine exam on Saturday. Thanks for the help!

[@fernandou1704]

Your videos are remarkably clear. Much better than many lecturers' I've had. Just a quick comment/question: my Harvard graduate Ph.D. in Epidemiology big head professor told me that I shouldn't make the assumption that "we are 95% confident that this interval contains the true value of the population" because this definition only applies when we are thinking of a hypothetical infinite number of samples (re-sampling/frequentist statistics approach) but never to any specific sample alone. Therefore, the explanation of minute 4:34 would be correct based on what he explained to me, but what you said a few seconds earlier (in minute 4:25) would be imprecise due to this technicality because we can only say this when we are considering broad re-sampling (but never for our single sample). Would you say that he might be correct when saying this? Thanks a lot. Your contribution to people you want to understand statistics is truly enormous with such clear videos!

[@DrNic]

For any specific sample, providing it is random and representative of the population in question, we can say that we are 95% confident that a 95% confidence interval will surround the population mean. The explanation of 4:34 is the statistical meaning of "95% confident". We do not take more than one sample in any instance, so this is the correct interpretation of a single confidence interval. There is always a tension between very very precise definitions and definitions that are useful and useable.

[@thinkingai6017]

I learned more in 5 minutes than I did the past 2 weeks

[@DrNic]

That is great to hear. You probably had most of the ideas already and this video helps to organise them for you. Good luck in the rest of your studies. You can find our videos organised here: creativemaths.net/videos/

[@thinkingai6017]

@@DrNic Thank you!

[@NikPnchl7]

very nice thanks...The part about what it is NOT is just as useful as to what it IS

[@qiaogao4251]

Thanks a lot! Your explanation is quite clear and simple. I really like the way you explain every details of the concept with examples.

[@DrNic]

You're very welcome! I do think really hard about these videos.

[@PharmaEducation1]

Hi, Dr Nic, today I truly understood CI 95%. And I am 95% assured to have your channel subscribed is the only best option. :D

[@DrNic]

Excellent!

[@zeedee6688]

great job, really made it simple. Superb. Just a lit little bit curious at the like being placed against the comment trashing Khan academy. I agree that their explanation is not that great but overall the guy has done a great job. One academic should not enjoy the trashing of another. Just saying

[@DrNic]

Thanks. My concerns with Khan Academy are based around the procedural pedagogy and lack of vetting. Considering the funding that has gone into KA, there needs to be better quality control. I have written several blog posts about my concerns, including an open letter to Sal Khan. Many teachers share my concerns.

[@DrNic]

And you may have noticed that I try to like all the comments, as I appreciate any interaction. I also "liked" a comment saying I was almost as good as KA.

[@zeedee6688]

Statistics Learning Centre First disclaimer , I actually had to learn what pedagogy meant before replying :-). I agree that the explanation by Sal Khan is not up to the mark. And I may be mistaken but the comment by M. Shafei was the only one with the logo along with it. Anyway, my knowledge is zilch as compared to yours or Sals, and I benefit from both. Again, thanks for making It so simple. And taking the time to reply. Quick question, is Relative Risk applicable to control studies comparing a drug and a placebo? Thanks.

[@MyteeBumbleBee]

Once again you knock it out of the park, Dr. Nic! You got me! I'm subscribing!

[@DrNic]

Welcome aboard! Maybe consider becoming a channel member! kzbin.info/door/G32MfGLit1pcqCRXyy9cAgjoin

[@SaurabhGupta-om5ow]

I was struggling with this concept before, but thanks to your excellent teaching skills, I now have a solid understanding of it😊😊

[@DrNic]

That is great to hear. I put a lot of thought into my videos and I have had considerable experience so I am glad I can help you.

[@andyzhang6305]

You explained the formula in such a clear way, thank you for the hard work!

[@DrNic]

You're very welcome! Thank you for your support.

[@lexx8335]

It's ABSOLUTELY AMAZING how much I understand now thanks to this video😢❣👏

[@DrNic]

That is music to my ears

[@harishsivaramakrishnan7096]

You, ma’am, are a huge time saver !

[@DrNic]

Glad to hear it.

[@harishsivaramakrishnan7096]

​@@DrNic If you can't explain it to a 6-year-old, you don't understand it yourself. Reminds me of this. Your videos have saved me some embarassment. lol.

[@vladimir_rize]

one of the best explanation ever!

[@DrNic]

Glad it was helpful!

[@rockabc1135]

Wonderful.. Thank u so much for creating such a beautiful content.. really appreciated... Thanks.

[@Picknikly]

this video is awesome! i made your drawings and schemes in my notebook, it seems so easy when you explain it. Just great!!!

[@fpscppscofficialdoctor3061]

Infinity times best lectures ❤️❤️❤️❤️

[@NiaNicoleXO]

Thanks so much I had an exam & I needed this so bad! God bless you :)

[@xanderk84]

Very clear, thank you. Nice use of animation in this video.

[@PrashanthG]

Helps in conceptual understanding. Really great. Thanks.

[@zoe2354]

Oh my God, you're the best! I wish you were my prof! Stats would have been a ton more interesting.

[@sashwattarenia258]

terrific lecture...i always found this to be ridiculously confusing but thanx to you guys for clearing the concept..

[@EvanLonda]

Thank you so much for posting this straightforward content!

[@DrNic]

Glad it was helpful!

[@AmitKumar-rz2en]

I am a medical student and we have hard time with biostatistics. This dispelled a lot of ambiguities. Please upload some videos related to biostatistics. Like null hypothesis, types of error in studies and power of study.

[@DrNic]

Hi Amit I'm glad the video helped. You might like to watch the playlist about hypothesis tests, which includes a video on types of errors. kzbin.info/aero/PLm9FYjKtq7Pzjh7e727hSr8VvSR9OvqsZ

[@AmitKumar-rz2en]

@@DrNic thank you so much. Would really like videos on relative risk, odds ratio, attributable risk, attributable risk percentage. Really like the simplified explanations.

[@chvrleshd]

Statistics will be easier to learn if they can calm down with these terminologies. The terminologies make things so complicated.

[@DrNic]

Yes the terminology can make it more difficult, but there isn't a lot we can do about that!

[@ca.savanpatel8604]

Best statistics teacher...Thank u so much

[@DrNic]

So nice of you

[@calvinlparks]

Tank you for this intuitive explanation

[@DrNic]

You are most welcome. Good to hear you find it intuitive - I do aim to make it about ideas rather than procedures.

[@saltator8565]

Thanks for explaining the purpose of the formula's components! I struggle to understand math formulas. Oftentimes, it just looks like a bunch of letters thrown together for no reason.

[@DrNic]

Happy to help!

[@greatvedas]

Concepts so clearly explained. Thanks Dr

[@DrNic]

You are welcome

[@Sarpamus]

very conscise and explanatory. thank you for sharing

[@DrNic]

You're very welcome!

[@TheMerahi]

How awesome. I am seeing this video before my epidemiology and i am sure i ll b man of the match. Dr. Dr. Nic, I automatically subscribed to your channel. Plus , i am also impressed by the quality of the video. i wanna know how such very attractive videos are prepared. I need somebody's answer

[@DrNic]

I'm glad you appreciate the videos. If you become a channel member you get access to even more of them. We use Adobe Premiere Pro for editing.

[@fpscppscofficialdoctor3061]

Best lectures ❤️❤️❤️❤️❤️❤️❤️❤️

[@AwesomeMan-wb5dt]

Super clearly explained and very handy, thanks.

[@bharatratan8554]

Simply "WOW" . Thank yu very much ❤️

[@DrNic]

My pleasure 😊

[@taisaichan9568]

Thank thank thank you soooomuch Dr.Nic You really helped me

[@DrNic]

That is good news. I like to help people

[@fernandoarthurmesquitagome5066]

I loved the video. Very elucidative and ludic...

[@litian6405]

The best ever explanation!

[@SouravDas-eg8ok]

great video. the idea goes into my head very easily which I hardly can forget :)

[@DrNic]

Perfect!

[@ziashafei1820]

This video is so clear and useful

[@BigYellow144]

At 1:08 the s is the standard deviation, which you divide by the sample size n to get the standard error. But later around 3:40 the s is the standard error divided by the sample size.

[@BigYellow144]

Ok I figured it out, she misspoke if you look at her inzight sheet she writes down standard deviation, but says standard error.

[@DrNic]

It’s just the pause is a bit long.

[@kristenpearis2830]

Literally the best video!!

[@muzaalemoses467]

This is very educative and many thanks for the efforts.

[@DrNic]

Glad it was helpful!

[@esan120au]

all your CI videos are wonderful. thanks a lot

[@DrNic]

Thanks - I really try to make them as understandable as possible.

[@anyijukamark8257]

you have done it soo well mum, thank you

[@DrNic]

Thank you

[@iKylaAwesome]

I finally got it! Thank you!

[@teamtigers7571]

i hated epidemiology until i watched the vids. thank you