Statistics 101: Single Sample Hypothesis t-test Concepts

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11 жыл бұрын

Statistics 101: Single Sample Hypothesis t-test - Part 1
Part 1: Conceptual Background
Part 2: Example Problems
In Part 1 of this video, we discuss the basics of single sample hypothesis testing when we do not know the population standard deviation and/or are using a small sample, n under 100. We also discuss how alpha and the t-distribution influence the location of the critical value(s).
For this type of test, we are comparing a sample mean to a hypothesized population mean. We examine the rejection region, nonrejection region, and the critical values that separate them. Finally, we learn to compute the t-statistic. Enjoy!
My playlist table of contents, Video Companion Guide PDF documents, and file downloads can be found on my website: www.bcfoltz.com

Пікірлер: 228

@robertoaraya910 9 жыл бұрын

The initial pep-talk made me NOT run away from statistics.

@ssmediscan 10 жыл бұрын

The beauty of a teacher is not in how much he/she teaches but how much the students learn.. You are indeed amazing. Thank you

@chryssokonofua1109 9 жыл бұрын

Brandon, I ran away from my maths classes in the 70s and from college stats classes in the early 80s. You are helping me with what nobody could teach me then. You are a genius. And you deserve my commendation. May God keep you going stronger.

@BrandonFoltz 11 жыл бұрын

Oh thank you! I am a learner first and foremost and just LOVE helping others grow and develop. You can do it just hang in there, we are all rallying for you! - B

@michaellewis4750 9 жыл бұрын

Wasn't expecting the pep talk. But it brightened my morning!

@BrandonFoltz 9 жыл бұрын

Michael Lewis haha thanks Michael! We all need a pep talk now and then and sometimes it's all we need to get motivated and feel positive. Glad you found the video helpful! All the best, B.

@tinayemutendera1331 7 жыл бұрын

t test

@dariodemattiesreyes3788 10 жыл бұрын

What a serious thing you are doing here. This is a really hight qualified lesson, the didactic details, the voice modulation, the video rhythm, the environmental music, etc, etc, etc. Excellent!!! Thanks for your work.

@kadel300 8 жыл бұрын

I learned more from you in 10 minutes than I did from my Quantitative Methods instructors in 5 weeks. Thank you.

@igrewold 8 жыл бұрын

+Schmitty300 Teaching is an Art, my friend.

@wellyrose11 6 жыл бұрын

That pep talk was adorable and just what I needed. Great video, thank you! :)

@stellau2223 Жыл бұрын

These videos will remain forever green. God bless you Best Stat Prof on this side of eternity

@cammlounsbury4878 9 жыл бұрын

There was a time when I would rather eat broken glass than do statistics. Thanks to you, I'd rather do stats! Seriously, these videos have been tremendously helpful.

@Margauxhoney 5 жыл бұрын

lol

@gulf4yankee 5 жыл бұрын

I am preparing to take the ASQ Black Belt Certification Test. I wish we had you for the instructor. Your instruction method and presentation far exceeds the efforts the instructor we had this past summer. Thanks to your video. I was able to relearn Hypothesis tests and actually understand it! What a break through. I use this stuff everyday on the job. Thank You.

@cynthiarojas4199 3 жыл бұрын

How did your test go?? I am preparing for the ASQ CQE and so far this is the most comprehensive material i have found!!!

@cleverclover7 4 жыл бұрын

Great video. Taken many stats courses, this is one of the best explanations of these concepts in a cohesive form I have seen. Thank you.

@rajanvk939 2 жыл бұрын

This is best on the entire KZfaq platform on the statistics as it covers from very basics with excellent concepts and examples. Wow. Amazed your effort Professor Brandon

@Nxrp015 3 жыл бұрын

These videos are FANTASTIC!!! I have taken stats courses in my undergrad and grad school but this is the first time I am truly understanding it. So thanks a lot!

@ResaJoan 5 жыл бұрын

THANK YOU! My professor is so unclear I was losing hope of understanding before the next assignment is due. Thank you for including the words of encouragement at the start! Thank you even more for your clear and thorough explanations throughout. I now feel confident that I will figure it all out eventually and do well in the class if I keep watching your videos and practicing. Thank you!!!

@davidshakil1985 9 жыл бұрын

I just want to let you know that your videos are fantastic and very helpful. I am taking Psych Stats and I was struggling with some basic concepts. Your video just answered all my questions. Keep it up!

@jainy1707 7 жыл бұрын

you saved me from thesis tragedy, can't thank you enough. you make stats easy

@OnlyTeaGuru 8 жыл бұрын

You're a good teacher, thanks for being patient. Any good math teacher I've had doesn't rush through things.

@syandanreddy5534 4 жыл бұрын

I am happy that there are people like you in this world who make things much easier and intuitive sir. I wish i was your student at some point in my life. Thank You so much for what you have been doing to the community.

@sjackson3806 9 жыл бұрын

You are awesome. I was totally lost before this. God bless you and continue to do what you do!

@Katex1234x 10 жыл бұрын

your videos are making freak out a little less about my upcoming stats final.... something tells me ill be seeing these in my sleep over the next 2 weeks. thanks for doing what you do!!!

@Ward2640 10 жыл бұрын

Brandon Folz is the best teacher i ever had for statistics, you rock harder than a brick!

@huriatariq2533 6 жыл бұрын

Thank you so much!! Your videos are helping me so much and I just wish I had found them a bit sooner then I wouldnt have had such a bad time with my stats course the entire semester. You are a great and talented teacher!! Truly!

@joseferreirapinto9523 4 жыл бұрын

Thanks Brandon: your work from an educational perspective is amazing. Kudos to you!

@sergior.m.5694 4 жыл бұрын

Thanks. I keep coming back to these series to refresh my knowledge

@chenwei7 5 жыл бұрын

Thank you, Brandon. I am struggling for my student life, it's so lucky to meet your video!

@DonnaKjellander 8 жыл бұрын

Thank you, this has to be the best video and explanations I have seen so far. Great explanations! i will be watching more of your videos.

@timbruse 10 жыл бұрын

Excellent! Thank you! I now follow each stat class up with these videos.

@BrandonFoltz 11 жыл бұрын

Thanks Rachel! Professors almost always have the best intentions but I know they have a zillion things to do. But I am very glad you find the videos helpful. May we all continue to learn and grow! All the very best, B.

@BrandonFoltz 11 жыл бұрын

You can do it! Have faith in your abilities and work-ethic. Coming back to a Ph.D. program after time away is an awesome credit to your desire to realize your self. It is all going to work out in the end my friend. Pay it forward when you have the chance. All the very best, B.

@tyler20082010 10 жыл бұрын

Thanks for making and sharing these great videos. They are so clear. I like the way you encourage people to keep learning. I also like it that you will go over the previously discussed topics before starting the new ones. Greatly appreciate your efforts.

@mishiboo44 5 жыл бұрын

I like the encouraging words at the start. Lord knows it's a struggle. Two more weeks. thanks.

@joshmecham 10 жыл бұрын

I enjoy watching your videos; they are great for when I need help in my AP Statistics course. I also enjoy how you teach. Keep up the great work!!

@BrandonFoltz 10 жыл бұрын

Thanks Joshua! I am glad you find them helpful. Keep on learning; never stop. All the best! - B

@kellijackson-farris5165 10 жыл бұрын

Thank you so very much, I am studying for my Basic Statistics final at this time. I have gained more understanding watch just one of your videos than I have during the entire class. Thank you for taking the time to explain the concepts. I feel confident that I will pass the exam this week. Bless you!

@ryanweber7826 2 жыл бұрын

I have watched several of your videos. I am in intro to statistics and have a hard time figuring out t test and what it does and just the basic meaning. You have been very helpful. Thank you very much!

@TimHaston 10 жыл бұрын

Thank you for your carefully created video. I am currently writing my master's thesis, and need to include a T-Test. Being that I never took probability, this was an incredible source of information. I haven't got all of the terms committed to memory, but I certainly understand what is going on with this now.

@ernestoperez731 9 жыл бұрын

What a great series of tutorials. Yes, keep it coming.

@somcana 5 жыл бұрын

I love you fatherly teacher. God bless your heart, mind and soul. May you reach infinite wisdom. Simply thank you.

@jenroberts7267 2 жыл бұрын

Excellent! Thank you so much for the thorough explanation, Brandon! 👏

@samuelswiswa3553 10 жыл бұрын

This is a superb lecture. Thanks a lot Brandon. It helped me a lot. Looking forward to listen to Part 2 of your lecture.

@sallyheifer9684 7 жыл бұрын

I don't know if you watch Expedition Unknown, but your voice and accent remind me of the voice and accent of the host. Thank you for the encouraging words! It has made this long study session a little easier. :)

@peterp6016 10 жыл бұрын

You are a good man for sharing this with us. Helps me soooo much. Thank you.

@Loewsey 10 жыл бұрын

Thank you so much. I'm already nervous for my statistic finals next week, but this helps a lot. Great explanation.

@teciagreen7718 6 жыл бұрын

thanks for the pep talk! U sooo neeeded it!

@hannahchapman6640 8 жыл бұрын

Recording that pep talk to play to myself every morning. So inspired!

@Chatwaheart 7 жыл бұрын

i have been studying panicking and looking everywhere for my final. your the first to really help. thank you so much!

@kibavlood5826 7 жыл бұрын

same likewise he helped me too, all the best for your paper.

@rebeccaryan1779 7 жыл бұрын

I am a PhD student who always needs refreshers for stats. Your videos are my #1 choice and have been, so thank you!!!!

@BrandonFoltz 7 жыл бұрын

Thank you Rebecca!

@erikibarra4530 6 жыл бұрын

Rebecca Ryan wow that's pretty disappointing

@mmmommm237 6 жыл бұрын

Hey me too!! :)

@pallabchakraborty3821 9 жыл бұрын

Hi, i am an MBA student from india .it is very helpful.every stats student should watch this video.thank u ,god bless u.........

@cilibearn1814 8 жыл бұрын

I was about to drop my statistics class - thanks for saving the day!

@ATWKate 9 жыл бұрын

Your teaching style is excellent! Thank you.

@MikeSparksTn 9 жыл бұрын

Thank you for sharing, your video is one of the better ones I've seen.

@icrad111 8 жыл бұрын

thanks for the encouraging words! I am an ER nurse and Statistics class is the hardest class I have ever taken!!!:)

@badoiuecristian 4 жыл бұрын

Amazing content. I am extremely grateful for giving ne the opportunity to learn for free and improve myself.

@marycurtis2917 10 жыл бұрын

This is so great it will really help me with my sats class. This is giving me the faith that I will make it. Thank so Much Brandon Foltz. Thank You!!

@fwlanger 8 жыл бұрын

Great video, congratulations! Awesome idea to compare the Z to the T distributions, made me really understand the concepts!

@RQUIGL13able 7 жыл бұрын

Best tutorial I have ever had.

@chinmayeejoshi4592 7 жыл бұрын

Thank you! I love your pep talk.

@walirahman8014 9 жыл бұрын

Thanks for the video, this was very helpful especially the pep talk in the beginning of the video.

@rynoweston 9 жыл бұрын

Thanks for your videos dude. These really help to clarify some of the stuff that I've been learning. You teach the fundamentals so well that it helps me to understand other problems much better.

@lnghngong2494 9 жыл бұрын

It is really helpful. Thank you very much indeed! Bye from Cambodia

@geyoulkim1291 10 жыл бұрын

His lecture is a great. I have to listen time to time to refreshing myself.

@TheShekharaditya03 8 жыл бұрын

your motivational quote during the start of the video made my day thanks

@insilicium 5 жыл бұрын

Thanks for the video. I understood the contents, and you speak well and clear, understandable even for people whose English is not their native language. I would ask you a video about the Levene test.

@YoungPrettyThings 11 жыл бұрын

These videos make more sense than my lecturer at university! Thank you!

@SawanSalhotra15 4 жыл бұрын

Simple and exhaustive explanation

@ultra.violet5066 8 жыл бұрын

great videos and your skill as a teacher is unparalleled

@cclayborne7 11 жыл бұрын

I wish you had been my stats professor!! t-tests make sense now. Thank you!!!

@lpsglitterpaws8536 4 жыл бұрын

This is my last chapter in Elementary Statistics online. I don’t a teacher that posts lectures or anything, so I’m basically teaching myself through Pearson. If it weren’t for gifted teachers like you, I would not be able to get through it. I am forever grateful to you!

@angelreyes4631 Жыл бұрын

6 жыл бұрын

Great explanation, thanks!

@ImtithalSaeed 4 жыл бұрын

This clarification made me keen to do similar videos in the future.

@marciascott2424 9 жыл бұрын

Thank you for the words of encouragement. The videos are really nice.

@stinayoo 10 жыл бұрын

Thanks for the introductory motivational speech.

@Laohouzi100 10 жыл бұрын

Thank you so much for posting your video!

@samdavepollard 7 жыл бұрын

Gold. Thank You for sharing your knowledge.

@fransquash 9 жыл бұрын

VERY GOOD STEP BY STEP TUTORIALS.THANKS

@ankitanawalakha1687 10 жыл бұрын

I would have flunked if it hadn't been for your lectures. Thank you so much! :)

@k8reed 9 жыл бұрын

Your videos are fantastic!

@8NickzB 8 жыл бұрын

Pep talk was exactly what i needed

@alimahmoud4489 8 жыл бұрын

Thanks is not enough to express my gratitudes to your effort. I would to see more videos for econometrics also... Your style in explanations is amazing and fits all kinds of people,,,, Looking forward to hear new topics... Than you +Brandon Foltz

@vaibhav19 9 жыл бұрын

thanks a lot Brandon for the videos :)...they are really helpful!!

@vivirose6170 9 жыл бұрын

Thank you so very much. Your warm style is very kind. Stats is like going to the doctor with a mysterious symptom... we need someone to hold our hand. And if we have nobody, maybe a nurse will do :-). Thank you!!

@arete7173 11 жыл бұрын

Thank you very much Brandon for this video!

@BrandonFoltz 10 жыл бұрын

Hi Ana! Thanks for your question. I cover your first question at around the 9:20 mark. There I talk about samples, sample sizes, and sigma known/unknown. As far as real life situations, I go through practice problems in Part 2.

@paulernat 8 жыл бұрын

Good explanation . Attention to details are very good .:)

@BrandonFoltz 11 жыл бұрын

It all depends on the sample size. At n=100 the z- and t- are almost the same. The t- just accounts for the limits of sampling as n decreases. It's not that we "want" a less representative sample, it's that it just comes with the territory of sampling. With small samples, the interval has to be wider for us to be 95% confident that interval contains the "true" population mean.

@amitra7763 8 жыл бұрын

thank u so much Brandon... u r a life saver

@solaawodiya7360 8 жыл бұрын

Very Good. Glad I watched it

@jasimfarooq6905 10 жыл бұрын

Respected Sir, Very Good Presentation, Your pleasing lecturing make my study Simple

@JSTaylor556 5 жыл бұрын

4 years later, and that pep talk still helps

@whiteorchid1957 8 жыл бұрын

Thank you for another helpful video.

@kbell9917 8 жыл бұрын

Excellent video, Thank You

@michaelbries5344 8 жыл бұрын

needed the pep talk for this cramming session haha!

@jadenhastings 9 жыл бұрын

Very positive thanks for posting....Good for review too :)

@drjavaidahmadd 10 жыл бұрын

thanks.......Your lectures are of great help to learn the fundamentals.....

@BrandonFoltz 11 жыл бұрын

Oh thank you so much for your kind words! However YOU are getting yourself through statistics. :) Making the effort to learn and improve and the desire to do well are what is getting you through. And that is all you. Thanks for sharing with your classmates...that is wonderful! All the best, B.

@1Shoda 9 жыл бұрын

Thanks, last week was my first week of school and hated stats but this was really helpful 😄

@BrandonFoltz 11 жыл бұрын

Why thank you...but YOU are the awesome one! You have committed to taking the journey of learning and growing and improving. I am just the map-maker. :) All the best, B.

@lpsglitterpaws8536 4 жыл бұрын

Thank you Brandon!