Introduction to sampling distributions | Sampling distributions | AP Statistics | Khan Academy
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- Опубликовано: 8 сен 2024
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Introduction to sampling distributions.
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AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
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I feel like 10 minutes of KhanAcademy is worth more than 2 hours of lecture
Absolutely!!!!!!
Amen
tru, i am doubting my decision to pay for college to learn these things for free and more efficiently than my professors ughh
Facts
True
It's so clear! My professor takes days to describe it, using tons of definitions. This video is so good!
I learned this from my professor in the last few days and the concept made little sense to me, because he didn't fully elaborate as you do. Thank you for the stupendous clarity.
same problem even me
it's just because you didn't feel a need of listening during that time. Now that a test is coming up, you're focusing.
These Concepts work fine until you get University questions and nothing makes sense anymore.
Yes...in Indian situation. For us mathematics means put the value get the answer(pudi-getdi)😂!
Same 🤦🏻♀️
My thoughts exactly!
@@GodLovesYou531This is Khan Academy, not Con Academy
relatable lol
Thank God for Khan Academy! I would have been lost without this!
GREAT TEACHER,,, BETTER THAN SO-CALLED 3-6 HOURS OF CLASS LECTURES
Oh My God! I was struggling to get sample distribution for more than hours of explanations from different many videos. This video just a length of 7 minute
explains very precisely in a simple manner without any bombarding things. Just cant believe in 7 minutes, it's possible to explain sampling distribution
We're so lucky to have a resource like this
Absolutely the best instructor when it comes to learning a new subject. Thank you for all you do.
have a statistics exam tomorrow and this channel is the only reason why i now have a chance in passing it
The handwriting is so goood... neat and sharp, love it!
thax for the explanation because i left 1 hr before exam and this is how legends are born.
how was ur exam
Wow! My teacher took whole day to describe this....but this 7 min videooo is amazing
You have saved my future presentation of this chapter
Why are we replacing the ball and taking? As in, in our population for the balls, we don't have 2 balls having the value 1 right? What is the need for replacement?
Now I know how to determine the frequency. Thanks
Real G's out here explaining AP Stats like my teacher never could
كفيت ووفيت جزاك الله خير
This is so helpful! Sal is actually too pro at teaching
Thank you. I leaned a lot. Reviewing for my doctorate degree comprehensive examination.
Why do we use replacement?
Wow thank you. You saved my assignment.
if there is only one ball of each number. how can you pick two 3s or two 2s or two 1s. we are picking two balls in one event
In each sample two balls are picked but each individually...after the first pick the ball is replaced creating a probability of the same pick when taking the next ball
@@marywambui7279 this means that the population size is not 3, the population will have infinite number of balls but each ball is numbered either 1,2 or 3
@@AmBasLam It's really confusing. I think you are right, because it doesn't make sense to pick two balls of the same number if only one ball of each number exists
this channel deserves so much. you have helped so many students, including me, who absolutely struggles with numbers. thank you for that!
OMG, he makes it look so easy!!!
THanx heaps ! this makes it looks so much easier ❣ I think lecturers are trying to make things hard to value their qualifications 😹
thank you sir, really great explanation.
💗 IM feeling very happy 💯 for injibara university for that thing I sawed that on online
simple and fruitful
this is amazing!! helped me a lot!! thank you!!
Thank you for the explanation!
awesome video! thank you!
Got it, omg it's so simple after watching your explanation
Very clear explanation!
Very nice vid!!! Same with all your videos!!!😊
I would like to ask whether sampling distribution is always a normal distribution? Why🙈
thanks
If this what sampling distribution is
Isn't the same as the central limit theorem?
I can't find a difference between them
This video was so helpful!
You should invest in an audio interface and a Shure SM7B microphone.
Thank you
it's a very comprehensive presentation.
Thanks a lot
after all these years, I get this
How did you get those results written in the x-bars?
X-bar is the mean=(first value + second value)/num of value..... for example the first xbar =(1+1)/2 =1
what happens when the sample distribution of x̅ when the population is normal?what happens when the sample distribution of x̅ when the sample size is large?
gracias , super claro
Very good
thank you so much for this!!!
Nice explanation 👌👌👌
It's really helpful thank you so much
If you hate the black screen, invert the colors to make it white
10 min khan academy (true learning and practise) > 2 hours lecture (messy notes and mental stress). Wonder when university can stop paying some profs and donate more to khan academy...
I am study English by myself, Your video is very easy to understand and I like your voice, Can you introduce some same page for me? Thanks
hi, in 10 random samples, one frequency is equal to 0.1 probability. what is the probability of one frequency if there are 21 random samples??? need help please
I mean I'm aware its 21/1, what is its decimal?
Graph looks very familiar to normal distribution
i snickered everytime he said balls
Where did you get 1.5, 2.5, all the numbers on the right side
How do u pick 1and 1, 2 and 2 if the population contain only 1,2,3?
Anybody help me, how can we compute the Sampling distribution of the mean?
I'd rather be practicing piano and guitar(7) followed by intense research intervals on my Mac waiting for my lushstache to come home ;)
how was it 1.5
Is there any one ,who know about the wrong reseach paper of sampling distribution of the sample mean
where did you get the sample mean
He used relative frequency instead of regular frequency for those OCD ones.
ting machineintellect it’s correct. It’s just called relative frequency in the y axis when it’s all over 9. Simpler version would have been 1, 2, 3, etc.. which is just frequency.
How about if the 7C5?
What if the sample size is 3?
I think 3÷3 shouldn't be equal 3, it should be 1. So therefore there is no 3 in the chart.
right?
He is taking the average or mean. So it is 3+3=6. Then he divides it by 2 since he used 2 numerals for the average. 6/2 which equals 3.
you have repeated outcomes , total possible combinations should be 6, No ?
is it with replacement or without replacement?
Replace every time
İn Real world I wouldn't pick the same sample twice,, but here it is contrary,, can you please explain
where is the rest of it
You dont calcul the frequency that way ! The frequency is calculated by divinding with the sum of total hyppihed.
ya i still dont get it
What program do you use to make these video’s?
I think he use SmoothDraw as the drawing software
Me: a lazy in math "did he just add and divide that thing like 0.5 secs"
Is this sampling theory
How much time is wasted watching things be drawn, especially words
No need to read any other thing after watching this video
Sir please speek in Indian english
If there's only one number 1 ball, why would you record it as ( 1, 1 ) on your list. You can't possibly have two number 1 balls because there's only one in the population.
Possible, if sampling is done with replacement.
@@eminmammadov6525 this means that the population size is not only 3 balls
second
This is terrible...you arent teaching people how you get your answers
FIRST :D
Sometimes you just want a definition not an explanation.