Introduction to sampling distributions | Sampling distributions | AP Statistics | Khan Academy

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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

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tru, i am doubting my decision to pay for college to learn these things for free and more efficiently than my professors ughh

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Facts

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True

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These Concepts work fine until you get University questions and nothing makes sense anymore.

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Yes...in Indian situation. For us mathematics means put the value get the answer(pudi-getdi)😂!

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Same 🤦🏻‍♀️

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My thoughts exactly!

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relatable lol

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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.

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same problem even me

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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.

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have a statistics exam tomorrow and this channel is the only reason why i now have a chance in passing it

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GREAT TEACHER,,, BETTER THAN SO-CALLED 3-6 HOURS OF CLASS LECTURES

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You have saved my future presentation of this chapter

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Thank you. I leaned a lot. Reviewing for my doctorate degree comprehensive examination.

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this is amazing!! helped me a lot!! thank you!!

[@M0GEMB0]

Wow! My teacher took whole day to describe this....but this 7 min videooo is amazing

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Wow thank you. You saved my assignment.

[@2highbruh]

The handwriting is so goood... neat and sharp, love it!

[@andrewchen861]

This is so helpful! Sal is actually too pro at teaching

[@aradais1087]

OMG, he makes it look so easy!!!

[@hazelvigoyt1567]

Now I know how to determine the frequency. Thanks

[@x3candybabyx3]

This video was so helpful!

[@ivault3]

thank you so much for this!!!

[@sitinoraisyahbintiazmi1729]

Thank you for the explanation!

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Very clear explanation!

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Very nice vid!!! Same with all your videos!!!😊

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THanx heaps ! this makes it looks so much easier ❣ I think lecturers are trying to make things hard to value their qualifications 😹

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thax for the explanation because i left 1 hr before exam and this is how legends are born.

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how was ur exam

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Real G's out here explaining AP Stats like my teacher never could

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awesome video! thank you!

[@manafal-balushi3298]

كفيت ووفيت جزاك الله خير

[@AliHamza-yc4ul]

It's really helpful thank you so much

[@rishabhnarula1999]

thank you sir, really great explanation.

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simple and fruitful

[@husenibragimov6113]

gracias , super claro

[@nutansingh2051]

Nice explanation 👌👌👌

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after all these years, I get this

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[@edrickinata8422]

Got it, omg it's so simple after watching your explanation

[@chadholdaway2089]

You should invest in an audio interface and a Shure SM7B microphone.

[@nothing8752]

Thanks a lot

[@bluesky-mi2sx]

If this what sampling distribution is Isn't the same as the central limit theorem? I can't find a difference between them

[@ummmmee9957]

Thank you

[@selenamareyvermillion1798]

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?

[@margaritalanciso2738]

it's a very comprehensive presentation.

[@francesnicole8585]

How about if the 7C5?

[@11-berkeleyroyyuriahkelly89]

where did you get the sample mean

[@vigneshbalasubramanian7878]

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?

[@joshuariley4360]

If you hate the black screen, invert the colors to make it white

[@oreoshake5951]

Graph looks very familiar to normal distribution

[@aditigarima3946]

Very good

[@TaylorQuince19493]

Why do we use replacement?

[@thithanhmaitran8466]

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

[@kahoncheung7046]

I would like to ask whether sampling distribution is always a normal distribution? Why🙈

[@dunethchadeera5838]

thanks

[@hanwang1218]

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...

[@leonardogenghini9073]

What program do you use to make these video’s?

[@leonbuena5312]

I think he use SmoothDraw as the drawing software

[@thesecretjin5988]

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

[@marywambui7279]

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

[@AmBasLam]

@@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

[@vicadegboye684]

@@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

[@daashakms]

How did you get those results written in the x-bars?

[@zeyaddessouki890]

X-bar is the mean=(first value + second value)/num of value..... for example the first xbar =(1+1)/2 =1

[@GUERO6969]

Where did you get 1.5, 2.5, all the numbers on the right side

[@DammikaHerath]

How do u pick 1and 1, 2 and 2 if the population contain only 1,2,3?

[@christinejoy8469]

Anybody help me, how can we compute the Sampling distribution of the mean?

[@angelobermudez3492]

What if the sample size is 3?

[@sketch1625]

He used relative frequency instead of regular frequency for those OCD ones.

[@sketch1625]

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.

[@the_sourman]

i snickered everytime he said balls

[@JS-cv4vb]

how was it 1.5

[@shubhangibansal5373]

where is the rest of it

[@nglgalaxy98]

is it with replacement or without replacement?

[@jawadulkabir9120]

Replace every time

[@mazharahmed9058]

Is there any one ,who know about the wrong reseach paper of sampling distribution of the sample mean

[@appaknak7534]

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

[@appaknak7534]

I mean I'm aware its 21/1, what is its decimal?

[@phucyouse5316]

I'd rather be practicing piano and guitar(7) followed by intense research intervals on my Mac waiting for my lushstache to come home ;)

[@kizitodavinci3152]

you have repeated outcomes , total possible combinations should be 6, No ?

[@Anj9]

Is this sampling theory

[@Evelyn-pl1hd]

ya i still dont get it

[@shinnnnishin]

I think 3÷3 shouldn't be equal 3, it should be 1. So therefore there is no 3 in the chart. right?

[@LDHulll]

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.

[@whengamingyournotalone5740]

Me: a lazy in math "did he just add and divide that thing like 0.5 secs"

[@mc99297]

İn Real world I wouldn't pick the same sample twice,, but here it is contrary,, can you please explain

[@NishaSharma-se1js]

No need to read any other thing after watching this video

[@Potencyfunction]

You dont calcul the frequency that way ! The frequency is calculated by divinding with the sum of total hyppihed.

[@iskate248]

How much time is wasted watching things be drawn, especially words

[@ATodCoBlocks]

second

[@MiguelAngel-ep9vt]

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.

[@eminmammadov6525]

Possible, if sampling is done with replacement.

[@AmBasLam]

@@eminmammadov6525 this means that the population size is not only 3 balls

[@rajsthancommerceclassvijay3350]

Sir please speek in Indian english

[@mist6207]

FIRST :D

[@Anne_p]

Sometimes you just want a definition not an explanation.

[@Poppa_82]

This is terrible...you arent teaching people how you get your answers