As someone who struggled with this for two straight weeks before getting a 90 on the chapter review, this was the perfect refresher for the final. Much love, teach.
You're a life saver. Thanks for much for making these videos. They are clear, too the point, and clear up a lot of confusion. Wish you were my statistics teacher!
Mind blowing - all these years of looking at papers, not understanding what is happening in the statistical analysis part and this just made it a little more understandable
in the final statement, I would also include sample size used {n} as a reminder that these results are not the be-all-and-the-end-all absolute truth of the matter.
Thank you so much!!!!!!!!! statistics is a very abstract subject and just reading and attending one lecture about this isn't enough, soooooo helpful to be able to watch this over and over to understand.
Note to schools and teachers alike: Don't introduce AP STATISTICS IN THE 10TH GRADE. One of my least favorite classes. I mean it's a college class for crying out loud. Nice vid, didn't understand anything in school so now I'm here.
Sir my only request is that if you could upload full length vedio,which will help all students around the world. This is being submitted for all the vedio tutorial related with statistics. Thank you with respect.
Wait, I'm a little confused: shouldn't the IQ of the 30 participants be measured befóre giving them any medication? The way its done now in the video, you can't really tell whether the effect was due to the medication or just because you randomly chose some super smart participants, right?
I was thinking the exact same thing. As far as I can see, all we know is that the sample is different from the population after the medication. We do not know if they were not also different from the population before they took the medication.
In the example you say that you don't know the standard deviation of IQ scores, but aren't IQ scores more or less normally distributed giving it an standard deviation of 15?
I have a question, if i want to figure out if my sample meets a certain standard that I have set, is the One-Sample T-Test the one to use? For example, if I arbitrarily say that an exam score of 70% is the ideal score to get, and I want to find out if a group of students meets the 70% score criteria, is this test the one I should use? Because I think that the One Sample T-Test can be used, except that the formula involves a population mean. Instead of using a population mean, can I use the 70% standard as μ?
Hello sir Nice learning video moreover I have a confusion as here P value is more than Signaificance value.shouldnot we use the term Hold the null hypothesis or we will reject the null hypothesis.please clarify as here p value is more than alpha how can we reject it??
Question, my student's prof used "Standard Error" in this formula for s and not standard deviation for a single-means t-test. Should it be standard error or standard deviation?
why when using the z test, we are always speaking about real values. I mean for example 10 people are not in the interval between -5, 20. Here 10.96 is not the real value I do not even know that 10.96 is?
I have my final in 3 hours and this video is more helpful than my professor has been all semester! LOVE YOU MAN
Jbh u are absolutely right
@@abubakar8987 never use jbh again. no one uses that. stop. stop. STOP.
@@devinmcgroot7560you need to calm down. Jbh...
When I see people explaining shit so good like this, I ask myself how my teachers can be so stupid to take 2 hours explaining us shit.
Unknown Mystery Bcz we don't listen carefully during class.! Lol😂
As someone who struggled with this for two straight weeks before getting a 90 on the chapter review, this was the perfect refresher for the final.
Much love, teach.
Wow completely shocked, they should pay people like you to interpret the information for professors.
seriously
@@CAPRISUNBLAZE Was that a sarcastic expression?
@@sunitakalbhor8082 yea but, at the same time, we all wish we had professors like this one. professors are way worse than teachers nowadays.
it's so weird how badly professors teach. they get paid a lot of money to hinder learning haha
yes he explained it so well in such a quick manner without going into unnecessary difficult details
I Love You. 2 semesters and 3 lecturers couldn't provide me with an understanding of this, and you did it in 4.49 minutes.
You're a life saver. Thanks for much for making these videos. They are clear, too the point, and clear up a lot of confusion. Wish you were my statistics teacher!
One of the best T-Test tutorial that I've seen. Thank You.
Mind blowing - all these years of looking at papers, not understanding what is happening in the statistical analysis part and this just made it a little more understandable
Thank you so much. Your explanation is clear, not too fast, not too slow. So easy to understand with step by step.
The video may be old, but you’re help is timeless, thank you!
Thank you so much for these videos. I just love how you use examples to illustrate the whole thing, and it looks so effortless.
YOU ARE A GREAT HELP! This saved me from getting a failing grade in Psychological Statistics.
I swear this video was more straight forward and helpful than any video my teacher posted
10 years later... THANK YOU
great video, helped me review before finals
I HATE STATISTICSk
+Fayza Ali FUCKING HATe it n ive assignment for it tomorrow
in the final statement, I would also include sample size used {n} as a reminder that these results are not the be-all-and-the-end-all absolute truth of the matter.
Thank you so much!!!!!!!!! statistics is a very abstract subject and just reading and attending one lecture about this isn't enough, soooooo helpful to be able to watch this over and over to understand.
Vedios legit help me one day before my biostatistics
I finally understand t-test, thanks to you. It's very important to my thesis.
Alas, the result is that my treatment isn't significant.
Nice one now i understand completely how to reject and accept the null hypothesis
Note to schools and teachers alike: Don't introduce AP STATISTICS IN THE 10TH GRADE. One of my least favorite classes. I mean it's a college class for crying out loud. Nice vid, didn't understand anything in school so now I'm here.
Hi, the standard deviation of the IQ distribution is known. It is 15.
I'ma need some of that medication
Help needed! How would it be that p
really really really really clear!!!!!! you should be my professor
thanks a ton! doing statistics for my masters, this video is beautiful and extremely useful for last minute revision! :D Have a good day!
wonderful, wonderful, I can't thank you enough!!
thank you for being so clear and easy to understand. helped me so much! :)
LIFE SAVER!! Hope I can pass my test laterrr
It should be alpha/2 as H1 is two sided
I thought so too. left me confused a bit in that regard
Sir my only request is that if you could upload full length vedio,which will help all students around the world.
This is being submitted for all the vedio tutorial related with statistics.
Thank you with respect.
You're a life saver! Thank you!
very nice and crisp explanation
Wait, I'm a little confused: shouldn't the IQ of the 30 participants be measured befóre giving them any medication? The way its done now in the video, you can't really tell whether the effect was due to the medication or just because you randomly chose some super smart participants, right?
I was thinking the exact same thing. As far as I can see, all we know is that the sample is different from the population after the medication. We do not know if they were not also different from the population before they took the medication.
i failed my exam cz of u bruh
Thank you for the great tutorial!
Pleaseee make more videos. Your videos are awesomeeee
In the example you say that you don't know the standard deviation of IQ scores, but aren't IQ scores more or less normally distributed giving it an standard deviation of 15?
*When a ten year video save your report*
Great video, thank you, but the audio is pretty distorted at my end. If that can be fixed that would be great.
I have a question, if i want to figure out if my sample meets a certain standard that I have set, is the One-Sample T-Test the one to use? For example, if I arbitrarily say that an exam score of 70% is the ideal score to get, and I want to find out if a group of students meets the 70% score criteria, is this test the one I should use? Because I think that the One Sample T-Test can be used, except that the formula involves a population mean. Instead of using a population mean, can I use the 70% standard as μ?
Studying this module,Business Stats from my Sports and Leisure management course in Republic now.. Haizzz monday morning! :(
@statslectures thanks !! you're so efficient
Great video!
This helped me so much, thank you!
Sounds like bruce banner!
For some reason he sounds like jesse eisenberg to me lol
omg you right
I've got only one question: why is p < 0.05? Or better: what is p in this example? :S Thanks...!
How to get the standard deviation if only the average is given?
For example: if the population’s average IQ is 140, how did you get the sd 20?
Thanks ☺️ i was searching for this
Thank you! You’re the best!
The sd for d population is not gvn.. Tht is y we use t test, sd of 20 is for d sample.
Thank you very much!
Thank you so much, you truly saved me!
Hi. I hope u dont mind if I ask... What if the alpha level is not given, how do we determine what alpha level should we use?
I need to know as well :)
Shouldn't the denominator be n-1 instead of n? When is it n and when is it n-1? İ thought z-tests had n and t-tests had n-1.
some authors take n and some take it as n-1 , you can take n for both hypothesis test.
Thank you dude, you are great!!
Thanks a lot for explaining in detail 😊😊🙏
Thank you!
God the words to express how much I love this and the example is beyond words.
huge help thanks
Isn't it that you have to divide the level of significance (0.05) first by 2 since it's a two-tailed test?
chelzea -chan 0.05 = 5% 5/2 = 2.5
@@downtherabbithole02 thank you
very helpful presentation..
Awesome video! Thank you :)
The guy in Learn Analytics helped me a lot to understand. This guy doesnt explain shit.
should it not be ' sample standard deviation' in the question in place of standard deviation in the question ! Might be a cause of confusion ....
Hello sir Nice learning video moreover I have a confusion as here P value is more than Signaificance value.shouldnot we use the term Hold the null hypothesis or we will reject the null hypothesis.please clarify as here p value is more than alpha how can we reject it??
Lovely video.
In Step7, how do we know that p is less than 0.05?? 4:34
why root n? i think root n -1.
I also think same
Thanks so much helped a lot! 🙌🏻My stats prof sucks big time.
you cleared my doubts thank you very much sir..😇
Where did 10.96 answer come from?? Only thing I don't quite understand, can anybody assist please??
140 minus 100 divided by 3.65
Too good! Thank you.
This wassssssss so helpful
The hypothesis has a standard deviation?
Is not meant to be a z test
How to make a decision rule
is this a example of t test when n is equal ?
Thaaanks man!
very nice i wish he talked a bit slow
easy to understand
Question, my student's prof used "Standard Error" in this formula for s and not standard deviation for a single-means t-test. Should it be standard error or standard deviation?
THANK YOU.
very good pfesentation
why when using the z test, we are always speaking about real values. I mean for example 10 people are not in the interval between -5, 20. Here 10.96 is not the real value I do not even know that 10.96 is?
since the standard deviation is 20, should the value of the scale be 60, 80, 100, 120, 140?
it just means that 68% of the data is between 80 and 120, and 95% of the data is between 60 and 140.
Thank you sooooo much
If we want to know whether age of the persons affected the result which test should we use ?
Thanks a lot!
how sample of 30 have mean of 140, i m confused about it, x bar??? i have sample size of 30, then what is that 140????
Thank you very much
so clear，Thanks big time
very helpful
how did we get the 95% interval between 70 - 130?
How to know if it's two tail or one tail?
thanks very much that help me in me exam
sir please answer me how do you calculate the values like 70, 85, 100,115,130 on x axis.
Thanks boss!
And that medication was? Adderall.
You said we use a t test when the st. dev isn't known though in the first example it says there is a st. dev of 20 and we used a t test....
thats the s.d for the sample only, we don't know the s.d for the WHOLE population, if we did we would use the z-test. I THINK```