Population and Estimated Parameters, Clearly Explained!!!

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StatQuest with Josh Starmer

StatQuest with Josh Starmer

Күн бұрын

One of the most basic and most important thing we can do in statistics is estimate population parameters. This video explains what population parameters are and how they are used to gain insight into the world around us.
NOTE: This StatQuest assumes are already familiar with...
...Histograms: • StatQuest: Histograms,...
...Statistical Distributions: • The Main Ideas behind ...
...and the Normal Distribution: • The Normal Distributio...
...and if you want to learn more about Confidence Intervals, check out this 'Quest: • Confidence Intervals, ...
For a complete index of all the StatQuest videos, check out:
statquest.org/video-index/
If you'd like to support StatQuest, please consider...
Buying The StatQuest Illustrated Guide to Machine Learning!!!
PDF - statquest.gumroad.com/l/wvtmc
Paperback - www.amazon.com/dp/B09ZCKR4H6
Kindle eBook - www.amazon.com/dp/B09ZG79HXC
Patreon: / statquest
...or...
KZbin Membership: / @statquest
...a cool StatQuest t-shirt or sweatshirt:
shop.spreadshirt.com/statques...
...buying one or two of my songs (or go large and get a whole album!)
joshuastarmer.bandcamp.com/
...or just donating to StatQuest!
www.paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
/ joshuastarmer
Correction:
2:16 I meant to say 10 and 30. However, you should still get the point either way.
#statquest #statistics

Пікірлер: 308
@statquest
@statquest 2 жыл бұрын
Correction: 2:16 I meant to say 10 and 30. However, you should still get the point either way. Support StatQuest by buying my book The StatQuest Illustrated Guide to Machine Learning or a Study Guide or Merch!!! statquest.org/statquest-store/
@Pl15604
@Pl15604 2 жыл бұрын
About 11:19 ... In other words, the results would be if the 2 distributions (i.e., that of the population & that of the samples collected from the population) are overlapping even with high enough statistical power. Would you agree with this?
@statquest
@statquest 2 жыл бұрын
@@Pl15604 I'm not sure I understand your question, but the more data you collect, the better the estimates tend to be and the more power you have to correctly reject the null hypothesis (if that is something you want do). Having more power to correctly reject the null hypothesis is a way of increasing reproducibility. If you're interested in learning more about the null hypothesis, see: kzbin.info/www/bejne/ZqDGZWx6rqZmnrc and if you want to learn about power, see: kzbin.info/www/bejne/iKTGZq2krLdofKM
@cartoonanimation008
@cartoonanimation008 10 ай бұрын
I have a slight doubt in liver cell experiment ......if mean is 20 and sd is 10 then mean +/- 2(sd ) is the range for 95% population but in our case 100% population is between 0-40
@cartoonanimation008
@cartoonanimation008 10 ай бұрын
@@statquest yes but what if the new measurements we took after considering only 2 cells are on left hand side .....then the mean will shift away from actual mean . when you considered 3rd cell or even 4th and 5 th cell you placed those on graph accordingly .....that cannot be the obvious case
@nafisa.t13
@nafisa.t13 Жыл бұрын
The way I PANICKED for a second while my brain was decoding "mRNA transcripts in liver cells". Man, why am I so scared of math I'm weak with relief. Bless you, bless you for the apples.
@statquest
@statquest Жыл бұрын
bam! :)
@insertacoin738
@insertacoin738 3 жыл бұрын
this is pure dripping free gold
@statquest
@statquest 3 жыл бұрын
:)
@lidiyapriyadarsinik2815
@lidiyapriyadarsinik2815 3 жыл бұрын
My thoughts exactly.. I mean I am sure the universe is paying me back for all those hundreds of boring unproductive lectures and cruel profs I endured
@v.dineshkumar2562
@v.dineshkumar2562 3 жыл бұрын
With all due respect, I love you man. I have been binge watching your videos for sometime now. A big shout out to you and your team who make these videos possible and make them see the lime light. These video's are evergreeeeeennnnn. Your videos have been the learning blocks for some many around the world and many more people to come and start viewing who are not yet born. The content is very easy to understand. The concepts that I had learnt many year's ago when I look at your video's. They just provide me a different perspective all together. Thanks for your effort and time that you have put to get these content on this platform. You have made life easy for so many people. Please keep of doing this great work. Thanks for you and your team. LOVE you man for these fabulous content. Triple BAM!! initially I use to get irritated with the music bit. But now those are the parts which make them more interesting. Sometime I just watch the video for the music piece. Thanks Sir. Please don't stop and keep creating more contents. It will help the future generations to come.
@statquest
@statquest 3 жыл бұрын
Thank you very much! :)
@wenbaoyu
@wenbaoyu 4 жыл бұрын
Thank you so much for these videos. They’re the most clearly explained I could find all over the internet. I speak Japanese and Chinese as well. I had looked through all the free sources in those languages. Never ever had I come across anything as clear as this. 🙌
@statquest
@statquest 4 жыл бұрын
Hooray! I'm glad the videos are helpful.
@lilyha2470
@lilyha2470 4 жыл бұрын
Hey Josh Starmer, you are the miracle I was hoping for, as a physician I do not have time for reading these strange wording and foreign stat books, I stumbled upon your videos randomly while I was looking for a video on ANOVA, now I am a fan, I have started watching your videos from the beginning though they are easy, just to rebuild a stronger base, cannot thank you enough, love and respect, DOUBLE BAM
@statquest
@statquest 4 жыл бұрын
Hooray!!! Thank you very much! :)
@scott3158
@scott3158 5 жыл бұрын
I'm a bio/stats major in college now and your videos are the best! Thank you soooo much for providing quality content.
@statquest
@statquest 5 жыл бұрын
Awesome! Good luck with your major.
@yameideng4358
@yameideng4358 5 жыл бұрын
Glad to see you update this video list. Your videos help me a lot. Thanks Josh. Love you.
@statquest
@statquest 5 жыл бұрын
Thank you! :)
@user-uq3qh2cy9v
@user-uq3qh2cy9v 4 жыл бұрын
I'm a big fan of you and your channel. I've only joined since last week though, I have fallen in love with statistics that I used to hate. And I love and play ukulele! You're amazing!
@statquest
@statquest 4 жыл бұрын
Thank you very much! :)
@sganeshblr
@sganeshblr 4 жыл бұрын
Never seen such a cool way to make statistics so approachable! super work StatQuest team @North Carolina
@statquest
@statquest 4 жыл бұрын
Thank you! :)
@Madhumathi143
@Madhumathi143 4 жыл бұрын
Just started binge watching StatQuest and this is my 6th video. :D BAM!!!!
@statquest
@statquest 4 жыл бұрын
Awesome!!!! I'm so glad you like my videos!!! :)
@srieenhartatik5310
@srieenhartatik5310 8 күн бұрын
So glad I found your channel, I really really wish I found it earlier. But here I am, so grateful for all of your videos, thank you so much!
@statquest
@statquest 7 күн бұрын
Bam! :)
@alexandertalbott9255
@alexandertalbott9255 3 жыл бұрын
Dude you're an amazing teacher. Thank you for this!
@statquest
@statquest 3 жыл бұрын
Thank you! :)
@holgermatthies8539
@holgermatthies8539 Жыл бұрын
This is my third try tackling statistics, my old nemesis - only this time, I'll actually succeed. Thank you!
@statquest
@statquest Жыл бұрын
Hooray!!! Thank you so much for supporting StatQuest and good luck! Hopefully the 3rd time will be the charm! :)
@rodrigoperalta7158
@rodrigoperalta7158 2 жыл бұрын
Congratulations to your content. I am trying to learn statistic not in order to pass in a test ( or stuff like that) but to apply in my job rotine. Your channel focus in statistics concept without a huge load of algebra. I am very happy with this content. Thank you by sharing this aproach of knowledge
@statquest
@statquest 2 жыл бұрын
Thanks! I'm glad my videos are helpful.
@pablomonteiro_2024
@pablomonteiro_2024 3 жыл бұрын
Your videos are great. since im not a English speaker, it is very helpful you have subtitles like this. I'm studying Psychology and I'm afraid of Statistics. Thank you very much.
@statquest
@statquest 3 жыл бұрын
I'm glad my video is helpful. :)
@anitadeshpande2696
@anitadeshpande2696 8 ай бұрын
Is statistics also used in Psychology and in what way? If u dont mind sharing your thoughts... Thank u
@ashishdhakal6147
@ashishdhakal6147 3 жыл бұрын
wonderful lectures. It was title that attracted me to your videos 'clearly explained ' as I was mostly looking videos with high numbers of viewers.
@statquest
@statquest 3 жыл бұрын
Thank you! :)
@camillecany44
@camillecany44 5 жыл бұрын
Hi statquest, i really enjoy your job it's thousand time more easy to understand what we use when we are not mathematician due to your videos. Your video about t-SNE helped me a lot. Can i abuse and ask if you can do the same on the UMAP ?
@LEGOOOOOOOOOOOS
@LEGOOOOOOOOOOOS 5 жыл бұрын
I ironically love this channel. Just became a state major after switching from cs.
@statquest
@statquest 5 жыл бұрын
Awesome! :)
@Anonymous03Jan
@Anonymous03Jan 4 жыл бұрын
what a way of giving detailed and brilliant explanation!!!! Superb.... BAMMMMM!!!!!.......
@statquest
@statquest 4 жыл бұрын
Thank you very much! :)
@msaparajita849
@msaparajita849 Жыл бұрын
This is a really nice resource to quickly revise statistical concepts and that too visually, so this video is Bam!😁👍🏽
@statquest
@statquest Жыл бұрын
BAM! :)
@hedgehog-ho9sx
@hedgehog-ho9sx 4 жыл бұрын
Thank you for this I'm a med student and this helped me through a lot of confusion.
@statquest
@statquest 4 жыл бұрын
Awesome! :)
@supriyamanna715
@supriyamanna715 2 жыл бұрын
med students in stats, India is now changing!
@blueboystudios
@blueboystudios 5 жыл бұрын
Best stats teacher ever!!!!!! Thanks Josh 😄😄
@statquest
@statquest 5 жыл бұрын
Thank you! :)
@fengshandian
@fengshandian 4 жыл бұрын
Amazing!!! I finally understand the meaning of p-values and confidence intervals.
@statquest
@statquest 4 жыл бұрын
Hooray! :)
@richardkentburton2986
@richardkentburton2986 3 жыл бұрын
Dude your video saved my grades! Youre a life saver!! ❤️❤️❤️❤️
@statquest
@statquest 3 жыл бұрын
You're welcome!!
@rrrprogram8667
@rrrprogram8667 5 жыл бұрын
Finallyyyyyy.... It was longgggg breakkkkk... MEGABAMMMMMM
@emkahuda776
@emkahuda776 4 жыл бұрын
A very great explanation as usual. Could you please make a video explaining "Identification of spatially variable genes"? I don't understand at all about spatial variable genes. My background is mathematics, but I want to learn about this spatially variable genes. Thank you so much.
@sebastianwiesendahl5348
@sebastianwiesendahl5348 5 жыл бұрын
The question is, how confident are you that you will deliver the p-value StatQuest? Love your videos!
@statquest
@statquest 5 жыл бұрын
Ha! Good one. One day I want to do a straight up StatQuest on the t-test. However, if you want a sneak peak, check out my series of videos on linear models. Using linear models for t-tests is one of the coolest things.kzbin.info/aero/PLblh5JKOoLUIzaEkCLIUxQFjPIlapw8nU
@lancecruwys2177
@lancecruwys2177 2 жыл бұрын
Double BAM!!! Thank you for these useful refreshers.
@statquest
@statquest 2 жыл бұрын
Thanks!
@StatisticsinMedicalResea-rb8xp
@StatisticsinMedicalResea-rb8xp Ай бұрын
Be ready for seeing me in anyway at all research areas. I have started learning statistics from best teacher Statquest. I will do a lot of researches with this knowledge. Thanks for your clear English . I am from Türkiye and I have no problem with listening you with my poor English skills. I will focus doing statistics of my own researches. Thanks for all infos. I hope I can keep learning and reach Regression analyzies. I am medical doctor I have to learn using multivariate statistics. Thanks for everything
@statquest
@statquest Ай бұрын
Good luck! :)
@ElPrincip6
@ElPrincip6 2 жыл бұрын
What an awesome explaination , Thank you dear Professor
@statquest
@statquest 2 жыл бұрын
Thanks!
@hajarsalari2503
@hajarsalari2503 4 жыл бұрын
THANKS FOR THESE SUPER HELPFUL VIDEOS!
@statquest
@statquest 4 жыл бұрын
Glad you like them!
@namaste9111
@namaste9111 Жыл бұрын
I came for the stats. I stayed for the jingles.
@statquest
@statquest Жыл бұрын
bam! :)
@Himanshu-bf6wm
@Himanshu-bf6wm 3 ай бұрын
This was the best intro of the whole series
@statquest
@statquest 3 ай бұрын
Bam!
@danielpeter1998112
@danielpeter1998112 3 жыл бұрын
Hey Josh, could you do a new series of videos on probability just like statistics? Your channel will be a one-stop destination for interview prep. Can promise that :P
@statquest
@statquest 3 жыл бұрын
I'm planning on doing a few videos on probability soon.
@golivoc
@golivoc 3 жыл бұрын
Love the "I" friendly approach you have in every video 🤩
@statquest
@statquest 3 жыл бұрын
Thanks! :)
@NapoleonBenitez
@NapoleonBenitez 3 жыл бұрын
Amazing videos !!! Finally I got, thanks, thanks a lot Dr. Starmer. Some suggest reading s or videos ? Definitely the best !!!
@statquest
@statquest 3 жыл бұрын
For more videos, see: statquest.org/video-index/
@playerplaying3936
@playerplaying3936 4 жыл бұрын
You are really great bro. Helped a lot
@statquest
@statquest 4 жыл бұрын
Thank you! :)
@Justice_King
@Justice_King Жыл бұрын
Really Fantastic as usual! Thanks a lot Sir
@statquest
@statquest Жыл бұрын
Thank you!
@donnasaud5108
@donnasaud5108 3 жыл бұрын
omg i love ur channel!! glad i found it :D
@statquest
@statquest 3 жыл бұрын
Hooray! :)
@fburton8
@fburton8 5 жыл бұрын
Minor correction: "between 10 and 30" 2:14
@statquest
@statquest 5 жыл бұрын
Thanks! There's always one or two things like that. Oh well.
@fburton8
@fburton8 5 жыл бұрын
@@statquest Yeah, but still a great video!
@santoshgujar5237
@santoshgujar5237 2 жыл бұрын
Everybody love somebody, Thank you, Sir
@statquest
@statquest 2 жыл бұрын
Thanks!
@jhanvilotwala1234
@jhanvilotwala1234 2 жыл бұрын
Really like your videos, Josh! I am building my statistics knowledge solely with these videos. I have a question at @3:40 that how is standard deviation 10? If we are looking at how wide the curve is, it widens from 10 to 30 which makes a difference of 20 but 20 is mean. I'll probably look at the next video about calculating s.d. but curious for now.
@statquest
@statquest 2 жыл бұрын
It's +/- the standard deviation. This is explained in the next video.
@rizazo1212
@rizazo1212 3 жыл бұрын
I felt the triple bam after the p-value and confidence interval bit!
@statquest
@statquest 3 жыл бұрын
:)
@alexandreafonso9909
@alexandreafonso9909 2 жыл бұрын
I just want to say Thank You!!!
@statquest
@statquest 2 жыл бұрын
Thanks!
@rajgurubhosale8680
@rajgurubhosale8680 4 ай бұрын
this video just made me to learn more and more about statastice BAM!
@statquest
@statquest 4 ай бұрын
bam! :)
@viduradias4646
@viduradias4646 2 жыл бұрын
Thank you!!❤️🔥
@statquest
@statquest 2 жыл бұрын
:)
@Sontiroy
@Sontiroy 4 жыл бұрын
Hello Josh, your videos are awesome. Can you make videos on q Value and Posterior Error Probability? It will be really helpful. Thanks
@statquest
@statquest 4 жыл бұрын
I've made one on FDR, which is related to q-values: kzbin.info/www/bejne/gWmvgoasqc-We9E
@jakobfredriksson2272
@jakobfredriksson2272 4 жыл бұрын
Damn you're good! I gave cred in another video, subscribed and decided to do this thing from basic. I'm learning programming on my free time in order to attract women and started to doubt my presumtions when reaching Machine Learning. The note you did, what to think of training dataset and predictions in all of this, helped me more than you can imagine. Now I can run a proper test and measure again if my previous result was true, that women indeed tend to like lazy Swedish programmers more than Portuguese Football stars. Tripple Bam!
@statquest
@statquest 4 жыл бұрын
I'm glad we are both interested in statistics for the same reason. :)
@bharathsf
@bharathsf 2 жыл бұрын
@@statquest I started learning ML and came to stats for the same reason. Double Triple bam. I guess if we take the normal distribution of why people start to learn ML, I am sure its a very high probability that we came here to attract the ladieessss
@statquest
@statquest 2 жыл бұрын
@@bharathsf Totes!
@thebrainpillow950
@thebrainpillow950 Жыл бұрын
God bless you for this. This is real education :)
@statquest
@statquest Жыл бұрын
Thank you! :)
@moism
@moism 2 жыл бұрын
Thanks a lot sir!
@statquest
@statquest 2 жыл бұрын
Thanks!
@puffvayne5688
@puffvayne5688 Жыл бұрын
In the stats field, you beats Khan Academy dude!
@statquest
@statquest Жыл бұрын
Thank you! :)
@nagadityavoleti5212
@nagadityavoleti5212 5 жыл бұрын
Could you please share one video about variance covariance structure like unstructured covariance matrix or compound syemetri
@noli-timere-crede-tantum
@noli-timere-crede-tantum 3 жыл бұрын
"Imagine mRNA transcripts and genes" 😱😱😱😱 "Imagine apples and grocery stores" 🎉🎉🎉🎉
@statquest
@statquest 3 жыл бұрын
:)
@michaelgalario6655
@michaelgalario6655 3 жыл бұрын
Hi, Just stumbled upon your channel by chance while looking for something to get busy with during this pandemic. I found your videos easy to understand and I got actually hooked into watching the videos. Great Job and thanks for simplifying the concepts! By the way just a quick question though in this lesson. In the hypothetical data, you mentioned that most of the cells had between 20 to 30 mRNA transcripts, which represent the positive sigma level. May I know why you only chose the sigma level to the right? I am just quite lost with the positive and the negative sigma level. Hope you could give further clarifications on this. Thanks
@michaelgalario6655
@michaelgalario6655 3 жыл бұрын
Also, you mentioned that Standard Deviation corresponds to how wide the curve is from the mean or how spread the data is from the mean. From the example, you said it's 10, which made me think why 10? Shouldn't it be measured from the mean up to the last bin/sigma where one can see the data, which in this case is spread to 40. My understanding is from 20 to 30, it's 10 and from 30 to 40, another 10, so I assumed that it's 20.. Sorry about my question, I hope you get my point. Just got curious on this topic. Just want to have a better understanding of the concept. Thanks!
@statquest
@statquest 3 жыл бұрын
There are lots of ways to describe how data are spread about. One way is to use the maximum and minimum values (in this case, the maximum value is 40 and the minimum value is 0), but another method is the standard deviation. The standard deviation is useful because it corresponds to how wide a normal distribution is spread. To understand more about the normal distribution, see: kzbin.info/www/bejne/qKupiWiEjNSdppI
@9888565407
@9888565407 3 жыл бұрын
You are awesome my dude
@statquest
@statquest 3 жыл бұрын
Thank you my dude!
@AmooPayman
@AmooPayman Жыл бұрын
Thanks!
@statquest
@statquest Жыл бұрын
Holy smokes!!! Thank you so much for supporting StatQuest!!! TRIPLE BAM!!! :)
@moh.mostafa1518
@moh.mostafa1518 7 ай бұрын
The content is really amazing I need these slides to be a reference to me later when I need to remember something. How can I get these slides?
@statquest
@statquest 7 ай бұрын
This is (and a lot of other stuff) covered in my book: statquest.org/statquest-store/
@user-yl4pm3en2s
@user-yl4pm3en2s 8 ай бұрын
Thank you for such god content. I hope such comments motivate you !!
@statquest
@statquest 8 ай бұрын
Thank you! Yes! They motivate me! :)
@DrThalesAlexandre
@DrThalesAlexandre 2 ай бұрын
Excelent!
@statquest
@statquest 2 ай бұрын
Thanks!
@alenjose3903
@alenjose3903 3 жыл бұрын
everyone whose learning statistics should go through this at least once!
@statquest
@statquest 3 жыл бұрын
Thanks!
@asraarahmed4765
@asraarahmed4765 4 жыл бұрын
Sir please explain the same concept using business data like sales or brand ratings.
@chaosong2260
@chaosong2260 5 жыл бұрын
Wooooooo, that is supper great!!!!
@statquest
@statquest 5 жыл бұрын
Thank you so much! :)
@AnshumanSharmadev
@AnshumanSharmadev 3 жыл бұрын
Your video tutorials are BAAAAMMMMMMMM !!
@statquest
@statquest 3 жыл бұрын
Bam! :)
@adminenetzone6330
@adminenetzone6330 7 ай бұрын
You introduce R a lot in your pronunciation for examples you say rrrhhhey insteatd of hey and brraaam instead of baaaam..Hhhhhh. I'm from Algeria and it's a great pleasure to learn both american english and statistics with you
@statquest
@statquest 7 ай бұрын
bam! :)
@nit235
@nit235 3 жыл бұрын
I will tell to my teacher to come and learn with me here, rather than wasting our time at university. You have to teach our teachers how to teach. Thank you! Hooray ):
@statquest
@statquest 3 жыл бұрын
I'm glad my videos are helpful! :)
@nit235
@nit235 3 жыл бұрын
There are really helpful ! One question : what did you use to make these beautiful slades?
@statquest
@statquest 3 жыл бұрын
@@nit235 Keynote
@afshinmohammed5803
@afshinmohammed5803 2 жыл бұрын
the “bam.” Caught me off guard 😹😹😹
@statquest
@statquest 2 жыл бұрын
:)
@parladneupane
@parladneupane 3 жыл бұрын
Nice tutorials, how did you create a graphs? I need to create a similar to yours but didn't find any good tool.
@statquest
@statquest 3 жыл бұрын
I draw them by hand in keynote.
@fairuzam1420
@fairuzam1420 4 жыл бұрын
please make some video of how to measure in SPSS or any statistical computer application. I LOVE YOUR VIDEO
@statquest
@statquest 4 жыл бұрын
I'm glad you like my video. Would it be OK if I gave the examples in R? In R, if we collect a sample of data, called 'data' and want to estimate the population mean, we use "mean(data)". If we want to estimate the population variance, we use "var(data)" and if we want to estimate the population standard deviation, we use "sd(data)".
@fairuzam1420
@fairuzam1420 4 жыл бұрын
@@statquest thank you for the explanation, i mean i really enjoy to learn stats from your channel of how to use SPSS and any statistical apps like JASP, as the technical tools for statistical problem solving ... Maybe you may add the following step of using the SPSS after the explanation of any formulation of all kind of topic you provided :)))... , just some simple tutorial video of how to use spss and any computer stats software... I really enjoy the way you explain... Hope the best for you, #StatQuestaddict. (besides the fact that my stats lecturer explain it with the most complex way that maybe only just 5% of the students understand it)
@statquest
@statquest 4 жыл бұрын
@@fairuzam1420 I'm glad you liked my videos. I actually contacted the people at SPSS and asked them to give me a copy of the software so I could add steps to my videos, but they said no... :(
@stivraptor
@stivraptor 2 жыл бұрын
Finding this channel for the first time feels like finding El-Dorado
@statquest
@statquest 2 жыл бұрын
bam!
@vincenzo4259
@vincenzo4259 2 жыл бұрын
Thanks
@statquest
@statquest 2 жыл бұрын
:)
@biyelasll
@biyelasll Жыл бұрын
I WAS CRACKED UP when you're using mRNA as example and suddenly change it to apple, thats hillarious thanks for making me laugh TuT
@statquest
@statquest Жыл бұрын
:)
@user-fp9zn7on4z
@user-fp9zn7on4z 8 ай бұрын
Lovely vedios
@statquest
@statquest 8 ай бұрын
Thank you!
@korman9872
@korman9872 2 жыл бұрын
Tx sir
@statquest
@statquest 2 жыл бұрын
Glad you are enjoying my videos!
@arsentorosyan7834
@arsentorosyan7834 4 жыл бұрын
I know that this is the beginning of the course and maybe further it will be explained, but I will still leave a small remark. I think that in order to draw a normal distribution in this case one must normalize the data beforehand, because otherwise the fitted normal curve will suppose that negative cases exist. In this example we have 20 as a mean and 10 as a standard deviation. So we have 2.5% probability for negative values, which is impossible. Great course anyway. Listening just for fun.
@enthusiasticsimple901
@enthusiasticsimple901 2 жыл бұрын
Amazing😍
@statquest
@statquest 2 жыл бұрын
Thanks 😄
@karthikvijayasarathi89
@karthikvijayasarathi89 3 жыл бұрын
Could you also please make a video on Probability density function, probability mass function and CDF.
@statquest
@statquest 3 жыл бұрын
I'll keep that in mind.
@karthikvijayasarathi89
@karthikvijayasarathi89 3 жыл бұрын
@@statquest thanks so much.
@nihalshukla7718
@nihalshukla7718 3 жыл бұрын
can you provide me notes of total playlist? thanks for better explanation. you are the best.
@statquest
@statquest 3 жыл бұрын
I have study guides available here: statquest.org/studyguides/
@JorjeZarate-ej2fg
@JorjeZarate-ej2fg 10 ай бұрын
Has un vídeo sobre como calcular las probabilidades de una funcion de densidad usando la formula e integrando.
@statquest
@statquest 10 ай бұрын
I'll keep that in mind.
@TheMainCOW
@TheMainCOW 4 жыл бұрын
I have a question. I am having hard time understanding if Probability Distribution is the same thing as Statistical Population? Or, is Population related to all events of interest that have had already happened and that we wish to analyze using statistics. But, since its to costly to gather information/mesurements regarding entire population, we gather a sample by which we estimate population parameters and approximate population curve. When we actually approximate population curve, does that mean we have a approximation Probability Distribution, or is probability distribution concept related to sample space only? If so, how do we calc. probabilities for each element of the population? Sorry for long question, but these terminologies between Probability and Statistics REALLY confuse me. Please help me understand :( Also, really appreciate your work! I am learning A LOT!
@statquest
@statquest 4 жыл бұрын
I have a StatQuest that might answer your question. It is called: What is a Statistical Distribution: kzbin.info/www/bejne/pXqWmY2Apr19q8U
@BindhuJs
@BindhuJs Жыл бұрын
Thanks for the videos for giving us more insight on statistics. I have a doubt. How can we calculate the mean and SD of an image when the image need classification with multiple classes( say the image need to classify into 6 different color patterns)? ie, the behavior of each data might be different from another. Can you please address to my query?
@BindhuJs
@BindhuJs Жыл бұрын
For the training data set the population mean and population SD can be found. But it can be treated with an image(testing data) where it is grouped with different patterns(or classes )
@statquest
@statquest Жыл бұрын
To be honest, I'm not sure I understand your question. The mean and standard deviation are metrics that are applied to quantitative numeric data, not discrete data like images.
@claudiabeck1443
@claudiabeck1443 Жыл бұрын
I'm just refreshing my stats knowledge and ur videos are so helpful! I'm having a question though: I didn't get the part about the Exponential distribution as well as the Gamma distribution and how it can be compared/used like the normal distribution (5:57 - 7:10). Could somebody help me, please 😵‍💫?
@statquest
@statquest Жыл бұрын
There are lots of distributions in statistics. The normal distribution is one, and there's another called the exponential distribution, and there are many more. However, all of them can be used in the same ways. If we collect a lot of data and draw a histogram, we can fit a distribution to it and use it to calculate probabilities (by calculating the area under the curve or with the histogram).
@claudiabeck1443
@claudiabeck1443 Жыл бұрын
@@statquest Ah, got it. It appeared to me that they are kinda the same as the normal distribution which made no sense to me. Thank you so much for ur reply and keep up the great (and very helful) work! All the best from Germany :)!
@statquest
@statquest Жыл бұрын
@@claudiabeck1443 Happy to help! :)
@TejasPhase
@TejasPhase 4 жыл бұрын
Sir, where I can find the details about the "Central Limit Theorem"? You have mentioned in your video about it.
@statquest
@statquest 4 жыл бұрын
Here's the link to the video: kzbin.info/www/bejne/j3LPe3Z7ea1lq7s ...and here's a link to an index of all of my videos: statquest.org/video-index/
@nareshchinnam8349
@nareshchinnam8349 4 жыл бұрын
Hi Josh, Could you explain me how did you calculated "The area under the curve for all values equal to or greater than 30 at 4:20 and also what are populate rate and population shape
@statquest
@statquest 4 жыл бұрын
We use calculous to integrate the equation for a normal curve from 30 to infinity. Also, the normal curve does not have a rate parameter, so there is no population rate. However, other distributions, like the gamma distribution, have a population rate. These are just like the mean and standard deviation we have for the normal distribution. They define the shape of the curve.
@nareshchinnam8349
@nareshchinnam8349 4 жыл бұрын
@@statquest Thanks for your reply Josh. i got my answer
@bluebottle548
@bluebottle548 Жыл бұрын
Means no matter what the estimates of the sample are ....if P values of these samples r nearly equal then ....we have same confidence in their estimations
@thinlai417
@thinlai417 Жыл бұрын
i'm here because i like the way you sing🤣
@statquest
@statquest Жыл бұрын
bam! :)
@sagarganeshkar6734
@sagarganeshkar6734 Жыл бұрын
Need these slides for revision
@techno_adnan
@techno_adnan 7 ай бұрын
top class
@statquest
@statquest 7 ай бұрын
bam!
@SamuelGulas-qg9ul
@SamuelGulas-qg9ul 5 ай бұрын
Do I understand it correctly that the more and more data we the more estimated parameters get closer to the mean and STD is an application of central limit theorem?
@statquest
@statquest 5 ай бұрын
The more data we have, the better we can estimate parameters and less there will be less variation in those estimates if we do them a bunch of times.
@saint79209
@saint79209 Ай бұрын
Waiting for Fourth BAM!
@statquest
@statquest Ай бұрын
:)
@mohdhammadkhan5570
@mohdhammadkhan5570 3 жыл бұрын
Are you a friends fan? Because your introduction resembles me about Phoebe song 😂
@statquest
@statquest 3 жыл бұрын
See: kzbin.info/www/bejne/emHIl3t7f9iZftE
@mohdhammadkhan5570
@mohdhammadkhan5570 3 жыл бұрын
@@statquest oh my god 😂😂 I was right
@MohammedNoureldin
@MohammedNoureldin 4 жыл бұрын
Is there any explanation for the rate and shape parameters?
@statquest
@statquest 4 жыл бұрын
Different distributions have different population parameters. The normal distribution has the mean and standard deviation. Other distributions have other population parameters. For example, the Gamma distribution has rate and shape parameters. However, the concepts are the same - these population parameters determine the the properties of the population distribution.
@bonbonpony
@bonbonpony 2 жыл бұрын
Does it only work for features that can be ordered? (e.g. by heights, or by number of mRNA transcripts) What if we count things having different colors, for example? (like, 3 green apples, 7 red apples, 5 yellow apples, 1 rainbow apple)
@statquest
@statquest 2 жыл бұрын
The concept of population and estimated parameters applies to all kinds of data. However, when we have discrete data, like your example, we often have different parameters other than just the mean and variance.
@Han-ve8uh
@Han-ve8uh 3 жыл бұрын
8:04 says "the new measurements will come from the same population" sounds like "come from the same distribution?" 1. How do experimenters (both the 1st and subsequent people) know what distribution the samples come from and thus what population/distribution parameters to estimate? 2. What happens when someone later proves that the samples come from some other distribution that's not normal, does that invalidate all previous experiment results? 3. Even within the same family of curves, experimenters may use different tests which have different degrees of freedom, does this cause a reproducibility problem? 4. What does it mean for an experiment to be reproducible, or to have reproduced a previous experiments? Are the estimated population parameters and their confidence intervals part of defining reproducibility?
@statquest
@statquest 3 жыл бұрын
Han, the good news is that all of your questions can be answered by the Central Limit Theorem. In a nutshell, it says that regardless of the underlying distributions, the means (averages) are normally distributed and this means we can use basic tests (like the t-test) to compare means regardless of the underlying distribution. For more details on the Central Limit Theorem, see: kzbin.info/www/bejne/j3LPe3Z7ea1lq7s
@geoninja3094
@geoninja3094 2 жыл бұрын
Is the rate equal to the tanget slope of the curve?
@statquest
@statquest 2 жыл бұрын
What time point, minutes and seconds, are you asking about?
@dunjianxiao4105
@dunjianxiao4105 3 жыл бұрын
BAM!
@statquest
@statquest 3 жыл бұрын
Bam! :)
@adminenetzone6330
@adminenetzone6330 7 ай бұрын
This is a helpful video, but still hope to find an example of discrete probability distribution's parameters.... Such as binomial, poisson, geometric... Parameters... Because parameters distributions are not ebough clear for me
@statquest
@statquest 7 ай бұрын
I have a video about the binomial distribution here: kzbin.info/www/bejne/gGnNf6J8YrBre5o
@adminenetzone6330
@adminenetzone6330 7 ай бұрын
Yes I saw it and was very helpful , but actually I talk about parameters.... I wanna find a video about thr PARAMETERS of probability distribution
@rimurutempest8324
@rimurutempest8324 Жыл бұрын
This is the same with estimation of parameters in statistic and probability?
@statquest
@statquest Жыл бұрын
Yes
@arshadteli4791
@arshadteli4791 2 жыл бұрын
BAM!!!
@statquest
@statquest 2 жыл бұрын
Thanks!
@ha900
@ha900 2 жыл бұрын
Are population estimates and sample values the same??
@statquest
@statquest 2 жыл бұрын
The sample values are used to make the estimates.
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