Today we’re going to talk about confidence intervals. Confidence intervals allow us to quantify our uncertainty, by allowing us to define a range of values for our predictions and assigning a likelihood that something falls within that range. And confidence intervals come up a lot like when you get delivery windows for packages, during elections when pollsters cite margin of errors, and we use them instinctively in everyday decisions. But confidence intervals also demonstrate the tradeoff of accuracy for precision – the greater our confidence, usually the less useful our range.

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…95% has been around for decades, so, why, 95%—I'd use system theory to spec. returns…I’d have to buy the whole music store to finish my marathon. Which consequently would make me sure to finish it. Nice trick!

Y'all got a faint 60Hz hum here too. Is there a problem in your Indianapolis building?

One thing that's really confusing: given a sample and then calculating a 95% confidence interval for that sample, you cannot say that there is a 95% chance that the population mean is within that confidence interval. This is because every sample has other features besides mean and standard deviation that will determine how likely it is that the mean will fall within that confidence interval. If we just use the mean and standard deviation, the 95% confidence interval is the best guess we can make for where the mean will fall 95% of the time, and indeed for 95% of samples, the mean will fall within our confidence interval. However, if we have the most advanced statistical modelling tools known to man and other features of our sample besides the mean and standard deviation, we would know the exact probability that the population mean is within our confidence interval, which is likely not exactly 95%

The delivery guy will come by on the statistical 11ish. My impression is that computers will fight the indefinite by shooting the delivery guy, due to conservation of time and electricity.

In a paper almost certainly prepared for a statistics class, someone found the mean length of 30 randomly selected top 100 songs from iTunes was 226.93 seconds. Seventy songs of that length will last you through a 4 hour 24 minute marathon.

The forms of colorblindness I'm aware of are all genetic. I don't think we have a simple medication that could work like the one described.

There should be a link in the description to the topic play list

fuckwitt

I'm 95% that there'll be more than 3 fillings needed,

I should have been more specific. It's the true believers in computers who will fight the indefinite to save time and or electricity, because that's where they came from in the first place.

So if you're really lucky, that chocolate bar contains infinite calories.

Congrats on 7.8m subs

Well, now you have to wear gold pants next week…

Ha, "buying" music…yeah…i totally do that…

feel like i'm in a Casino with the stupid sound f/x

I have my statistics exam in 2 days and believe me, I'm not 95% confident of succeeding at all

could you please explain the BLP model in the next video?… that would be very usefull for me..

But the p value will vary depending on whether you are using the .05 level (used here) or an .01 level which is more stringent.

Dear John and Hank Green,

I love your channel, I subbed to them all. You're funny, but you also make history and literature fun. As for you, Hank, you make science fun! I saw the other channels (CrashCourse Kids, SciShow, SciShow Kids), and you are awesome.

Best wishes,

Your number one fan.

PS: I watch you guys every single day!

Hillary has a 98% of winning…….wait what?

Keep it up! If I remember accurately there is not much left for this section of the course 😀

Confidence interval for appearance of gold pants?

I’ve always thought that if a CI contained 0, it’s not significant? Am I wrong here?

traducción al español por favorr

Just realized why I was mesmerized. sss st st sss sh sss st st sss ss I had to work hard on that when I was younger. Good audio since it is normally considered a "distraction"… wait

Awesome series!!!!

Neat

Thank you Amy Adams for giving this coherent Crash course on statistics! (Instead of the Linguistics course you would expect)

ah stats… always very intuitive at the beginning. and then becomes less and less intuitive. it's just new terms and formula at some point. there is no "big picture" to help you find where you are or why you are there. anyways, great explanation as always.

you have singlehandedly saved my statistics grade thank you!

Where was this when I was in 9th grade 😂🤔

im 95% sure I'm gonna fail my exam tomorrow ahahaha kms

So people who buy songs really exist , interesting.

Perfect video