My teacher who was trying to teach us this content had over an hours' worth of content that still failed to accurately explain how to do this, your video was so much more helpful, thank you!
@neerajbhardwaj2784
9 ай бұрын
Don't underestimate that lecture, How many questions you can solve from 8 minutes of video as compared to 1hour long lecture?
@yiijung
7 ай бұрын
Don't compare it just the way you focus.
@mma_sap
2 жыл бұрын
Just learned a whole month of class in this video right here. You really the man
@dtacherra6063
2 жыл бұрын
its 1 week worth for my summer class.
@eleazararce5716
10 ай бұрын
Great video and came in right on time! Let me see if I can get the right answers now.
@celinemary2914
2 жыл бұрын
Compute for the minimum sample size using an appropriate formula. Assume that no similar study has been previously done and that the level of variability is unknown. Use 2% level of precision and 90% level of confidence. Could you please explain this to me sir!
@toni-anngayle5909
2 жыл бұрын
Thank you so so so so so very much. I have been struggling with this for almost 2 hours. You made it so simple, and your video is so concise, yet so impactful.
@Pahulu48
Жыл бұрын
fancy seeing you here. love you
@atavierreed2267
9 ай бұрын
same smh
@frndssuchi
2 жыл бұрын
So much clarity and such a easy way to teach. Appreciate your teaching style so much. Thank you for these videos. Love and respect from India 🤗
@alleahshane3345
5 ай бұрын
what if it is not mean but a sample space, the sample space cannot be seen in degree of freedom. which is 47
@jeenjoy7358
2 жыл бұрын
what if your degrees of freedom is 199? how do we find the values there?
@alisonhesse8575
4 ай бұрын
THANK YOU SO MUCH!!!!! YOU JUST HELPED ME PASS MY FINAL!!!
@khushbusubba1144
3 жыл бұрын
Your so cool, professor Eugene! love your teaching method, it's so easy to learn from you. Thank you so much. Respect.
@Rawennnnn
Жыл бұрын
Really helpful! How to calculate confidence intervals of variance (n under 30)?
@bigseekersb
2 жыл бұрын
I've seen other sources that state you can't estimate the mean with such a small sample size (n=14) unless you already know the original population data is normally distributed. That requirement was not mentioned anywhere in this video.
@diminarchy
Жыл бұрын
Isnt the t distribution for that? Wouldnt it be a z value for n>30 (im genuinely confused so pls weigh in lol)
@jabbedcrab
Жыл бұрын
@@diminarchy yes, that’s the exact reason why we use t-dist. We also don’t use T If we are given the population standard deviation.
@sumitnaik164
4 ай бұрын
thank you. you explained it very simply...
@mikekorsak373
6 ай бұрын
Your video was an excellent review - simple and succinct --- thank you!!!
@benjaminblankers4645
9 ай бұрын
you explained it very clearly sir, thankyou!
@shabnamrahman7410
5 ай бұрын
how SD came as 5.5
@jessicasophiedouie2275
2 жыл бұрын
This video explained this very clearly and made it so much easier. Thank you so much. You're an excellent teacher
@rramos2020
Жыл бұрын
I have been searching on how to solve this problem and you WERE able to break it down and i was able to follow without any problems. Thank you
@Valerie-yt9zj
2 жыл бұрын
Thank you so much for your help. Im in the middle of confusion and some how your way of teaching, talking and interpreting make me feel safe and calm. Like everything all have its solution. I know its sound rediculous but thanks again.
@inna1929
2 жыл бұрын
Thank you, Professor! You helped me out so much on this problem. Many thanks!
@arlenecampbell3877
5 ай бұрын
I thank you for making it so easy to understand.
@grosssaft3700
Жыл бұрын
my teacher needs to make notes
@anurajms
Жыл бұрын
ty
@nthabisengnathalie1135
Жыл бұрын
This was very much helpful, thank you.❤️
@mahiraamirova781
2 жыл бұрын
Excellent, professionallly, absolutely clear. Thanks. Let Allah Bless you
@aditya4974
3 жыл бұрын
Perfect explanation! Thank you so much
@Bob50520
Жыл бұрын
Beautiful and clean Eugene O'Loughlin. Wild how good that 6:58 min video was.
@hectorsosa7687
2 жыл бұрын
This was soooo helpful! Thank you for posting it. I was so easy to follow
@marynakshanovska344
2 жыл бұрын
Thank you so much, professor!!!
@ripbellx
Жыл бұрын
sir, you are a godsend. thank you so much for the informative but brief video!
@travistatman
6 ай бұрын
6:25 all of this is a great walk thru but the interpretation is incorrect. The correct interpretation is that for 95% of all random samples, the confidence interval will contain the population mean.
@abdulazeezolakunmi361
Ай бұрын
Absolutely, his interpretation is treating the population mean as if it were a random variable. But it is fixed.
@jst7675
2 жыл бұрын
I watch this always if i forgot how to calculate lol ty dude btw
@michaelpappas3857
2 жыл бұрын
Thank you Dr. O'Loughlin! Wonderfully clear explanation.
@logesh5071
Күн бұрын
thank you for the assistance, I will pass my exam because of you
@yvettestrandberg6267
Жыл бұрын
Your videos are so very helpful Thank you very much again!
@christineshavrnoch979
Жыл бұрын
You just explained it to me so that it “clicked” thank you for making this easy!!
@mayrasingh-v1l
22 күн бұрын
Great video! It's super easy to understand and you speak very clearly and at a good pace. Thank you!
@viktormaximiliandistaturus7660
9 ай бұрын
good, so now i know how to calculate it, BUT why is it called confidence interval? it is just taking properties of my limited sample and multiplying it with bell curve properties to simulate that my data somehow magically is enough data so that i can reliably tell me by adding normal distribution properties mechanics, that it can tell me the chance that the populatin mean lies between these 2 values. sounds pretty daring. i have no clue yet ehy this works or should be true, and under which circumstances.
@veerakanneboina8086
6 ай бұрын
What does this +/- in confidence interval formula accounts for.
@frielruambil6275
4 ай бұрын
Thanks alot you just helped me to answer my assignment questions 👏
@nathaliarocha6979
Жыл бұрын
I can’t believe I finally understand this, thank you so much!
@stephenf368
6 ай бұрын
Thank you!
@infiniteheartnig3413
5 ай бұрын
Love you ❤
@englishaccentcoach7419
7 ай бұрын
Really it’s useful but why you multiply critical value with SE
@shabnamrahman7410
5 ай бұрын
sorry 5.65
@cuttingedgetechsongsmovies9662
6 ай бұрын
Two-tailed t distribution table was used, right?
@serhatkoroglu6708
Жыл бұрын
great narration thank you
@erik9817
10 ай бұрын
Nice, and what if my T table only has one-tail?
@xinhuacao338
Жыл бұрын
Thank you. You manual calculation videos are really show the essence of statistics. I always use Minitab to analysis data, actually don't understand how to get the results. Your video helps a lot.
@mohamid2k438
4 ай бұрын
thank you so much for the help friend
@ukieeebeats725
Жыл бұрын
you're solid my guy
@TheDeeann1905
3 күн бұрын
why use T test instead of Z test ? .
@paulmckenna9927
10 ай бұрын
Easy to understand... at last. However, there are 4 results in the list of weights that are outside the CI range. 4/14= 28%. I thought that in a 95% CI range there would only be a 5% chance of having a result outside of the range
@trevorpope1913
3 ай бұрын
Thank you, your videos are excellent, it makes so much difference when you work by hand and explain why and how.
@abetguerzon1939
Жыл бұрын
why is it when im doing the math at 95% CI it does'nt match with my excel curve Area result.. it yields around 75% only when im estimating the sigma values to plot the normal dis curve.
@JoseFernandez-qt8hm
Жыл бұрын
so, any sample values above 999.47 and below 992.95 are rejects????
@Graanvlok
Жыл бұрын
Why do we indicate the t values on the curve? Shouldn't we be indicating the upper and lower limits (i.e. in this case 992.95 and 999.47) there instead?
@ABUBAKARRIBRAHIMKABIA-cs1nq
3 ай бұрын
Thanks very much sir. You just save my day. I have an exam to write in an hour time. Thumbs up for this video👍
@GreenYoshi3881
Жыл бұрын
I feel like I am not learning much in my current statistics class. KZitem has become my new professor and the only way I am understanding it which is sad. 😢
@thinkingahead6750
Жыл бұрын
Thank you that was very clear. I am trying to understand what it means when someone says something like "that is one standard deviation out" when talking about outliers in a population. I heard it in relation to the distribution of IQ results and the challenges faced by people with an IQ at a certain (low) level?
@antoniopanoflo123
2 жыл бұрын
...and this is a confidence interval from only one sample, correct? No bootstrapping because that would be too long of a process, correct?
@Societyofknowledge
2 жыл бұрын
great video and easy to follow!
@euanb2748
Жыл бұрын
I watched another video on confidence intervals and instead of using a T table the guy used a Z score table.... when do you know which one to use???
@Livia.S
3 ай бұрын
I had no clue on how to calculate this but after watching this video I can confidently say I will never fail this.
@PatoLorenz
2 ай бұрын
I truly appreciate your by Hand video series. It has been incredibly useful in my studies
@AngelAdeniji
9 ай бұрын
this video REALLY helped thx
@jasonmiller4490
Жыл бұрын
KZitem professors trump normal professors any day of the week, thank you for the great video
@KhaLed-pb4pu
Жыл бұрын
@4:28 why do we multiply the SE with the T value? what is the mathematical reason? thanks!
@slstats7948
Жыл бұрын
❤️
@mariusferreira3441
3 жыл бұрын
How do u get 5.65
@bigseekersb
2 жыл бұрын
There is some calculation not shown here. He had to take the 14 samples, get their average which is x-bar, and then use the standard formula to get the sample deviation, s, which is 5.65. (Formula is --> Take each data point, subtract x-bar from it, square the difference and then add all those squared differences together. Then, divide that sum by (n-1 ) . Next take the square root of that . That is the sample deviation, s.) Probably too late to help Marius, but people read these things for years, so maybe my reply helps somebody.
@wong4728
Жыл бұрын
OK it is in, Teacher Extraordinaire. Thank you for this.
@courtneygrant-xi4yc
Жыл бұрын
YOU ARE AMAZING!!!! thank you so so much
@tharunnl7810
Жыл бұрын
if the sample size is more than 30 should we refer Z table rather than T table?
@zachhutchison5574
2 жыл бұрын
your voice reminds me of the youtuber great scott, good video though very easy to follow
@prasadsawant4153
Жыл бұрын
Hello! What if the df value is 94? How will you find the T-value?
@theearthling8178
Жыл бұрын
Thank you very much! Was very helpful.
@pillainag5378
3 жыл бұрын
Fantastic teaching. Thank you
@hoangminhtran2786
Жыл бұрын
Help me please how to calculate the n=14 in his video? Thank you
@EugeneOLoughlin
Жыл бұрын
Hi Hoàng, "n = 14" is simply the total number of values in the sample. In the video above, there are 14 weights, hence n = 14. Hope this helps, Dr E.
@abby_plascencia7297
10 ай бұрын
Thanks for help! This video helped me so much more than my professor!! Keep up the great work Sir 😀
@statuscrew4335
3 ай бұрын
Very helpful love from 🇵🇰
@MunirAhmad-sv7nd
2 жыл бұрын
This is helpful . Thanks professor for this video . Comment is from Pakistan
@MasRehmani58
Жыл бұрын
Yar Mera paper hi ton Dy aa state da
@TheWaites
10 ай бұрын
Amazingly explained - Thank you!
@kaylakai
Жыл бұрын
very useful, explained very well, thank you!!!!!
@mitch6151
4 ай бұрын
The teaching is so clear and great. Thank you!
@maanavkapur9273
Ай бұрын
Concise, clear…what a guy
@scotturbanski740
7 ай бұрын
This has been so confusing and you made it so easy. Thanks!
@zeyadelhalaby5282
Жыл бұрын
thanks a lot I was struggling among many articles and stuff ..Bless you and healthy always
@smr0018
Жыл бұрын
Very helpful, thank you so much.
@MuhammadAyaz-gp7xd
8 ай бұрын
Thanks Thanks Thanks Thanks Thanks
@3zJHN
2 ай бұрын
thank you on what ground you chose 95% as your CI is there a rule or you just pick up what you want 95, 99...
@EugeneOLoughlin
2 ай бұрын
Hi @3zJHN, 95% is an acceptable level of significance for many statistical tests. If you need a more accurate result, say if you are doing clinical trials or measuring effectiveness of medicines, 99% would be better. It is up to you what measure to take and report in your results. Dr E.
@3zJHN
2 ай бұрын
@@EugeneOLoughlin Thank you so much doctor for the clarification It is really helpful. Appreciate you reply 🙏🏻🙏🏻
@johnralphbone8092
2 жыл бұрын
Why'd you make it so easy, and why does my teacher make this so freakin hard
@celinemary2914
2 жыл бұрын
I've learnt about finding confidence level after watching your video.
@nadinemaarouf4996
11 ай бұрын
thank you. how do we know when to use the t table vs z score?
@collins0052
Жыл бұрын
Thank you so much😭 I’m doing my assignment right now and couldn’t understand the teacher that was supposed to teach me this. Thank you for such clarity in how it’s done.
@mayrasingh-v1l
22 күн бұрын
Great Video!
@julialupica414
19 күн бұрын
THANK YOUUUUU
@8octopus763
4 ай бұрын
You save me❤😭
@sebjornsprauten1406
4 ай бұрын
great video!!!
@deltax7159
8 ай бұрын
your videos are always so straight to the point and helpful, thanks for everything you do.
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