Inferring population mean from sample mean | Probability and Statistics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacadem...
Much of statistics is based upon using data from a random sample that is representative of the population at large. From that sample mean, we can infer things about the greater population mean. We'll explain.
Watch the next lesson: www.khanacadem...
Missed the previous lesson?
www.khanacadem...
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
/ @khanacademyprobabilit...
Subscribe to KhanAcademy: www.youtube.co...

[@mathewrokz]

Your handwriting just kills me !!! sooooo good man !!!

[@aGVsaW9z]

After 2 courses in statistics the difference between the population mean and sample mean was never fully flushed out. I appreciate your clarity on this.

[@manthanmakwana6092]

Just wow, I already knew this things but now I know the meaning of all this. Thank you Khan Academy.

[@Bloodlines8]

You draw beautiful sigmas.

[@asif1995malik]

Funny I learnt the exact thing at school today!!!

[@walimian6060]

did you know that i love MATH??!!

[@mattrocks1283]

thanks for all the help khan i really am thankful for it. THANKS LUV U

[@ElectrikBear]

i like the way you say statistic

[@cholesterolkilla]

Very helpful thabks !

[@ProducerX000]

which t test would u use

[@iStalkerMan]

Pies

[@jhundo97]

Please add Korean translations

[@TitanTubs]

Why is the notation in an alien language..? I just don't understand why

[@MrCdale56]

maybe thts y u typed it in

[@CNYoungboy]

Can't we just put 5 instead of a small n when it comes to the notation?

[@CMThota]

You can, but the formula just general notation for any case, n might be 8 or 200 in another question, so we just use a variable. But in this case, you're right, n can be subbed for 5

[@All4mula]

or you can pray for a sign from god

[@eleoralow6617]

lol

[@danielkhouri1062]

You talk too much