The Bell Curve (Normal/Gaussian Distribution) Explained in One Minute: From Definition to Examples

If we measure people's height and display the results graphically, we'll notice that in most cases, we'll end up with something that looks like... you've guessed it, a bell.

The bell curve or Gaussian distribution is remarkably common when measuring anything from people's shoe size or even their IQ.

But what's the definition of the bell curve?

The term "Gaussian distribution" may sound misleadingly complicated at first, but fortunately, understanding the basics is not complicated at all.

I've explained the bell curve by, on the one hand, defining it and on the other hand, by illustrating everything through easy-to-understand Gaussian distribution examples.

After watching this video, you'll go from "kind of, sort of" knowing what this "Gauss curve thingy" is to meaningfully understanding Gaussian distribution.

Whether people refer to it as simply the bell curve or use the more sophisticated Gaussian distribution terminology, the bottom line is this: there's just no way to wrap your head around statistics without understanding the bell curve.

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[johnarat]

What my professor's couldn't explaine in two months you did in 1 minute

[SLAPME]

The Bell says it all, it really explains outcomes

[casparv]

Measured IQ scores follow the normal distribution *by definition*; thats just how IQ scores are defined and how IQ tests are created. There's not necessarily proof that intelligence (the rather abstract underlying concept) actually follows this distribution.

[Amir-English]

so much insightful...
Thank You! mi amigo

[MajestyVII]

the smaller the curve means less extremes right?

[Discovery_and_Change]

0:52 "proverbial top of the bell" -- "Proverbial" is not a statistical concept or word to know. The narrator is simply referring to something that is 'well known, especially so as to be stereotypical' when he uses the word "proverbial." In other words, he's saying the "top of the bell" is something you may hear a lot about when studying and solving statistics.

[arminarlert]

What if all are in the extreme? Like very high? What can be deduced from that.

[WorkingClass]

Well; 'explained', but not REALLY, because a LOT of crucial info is missing. Better to make it 2 or 3 minutes then.

[mariotrujillo]

4 year old video 76 thousand views and only 21 comments. I guess this bell curve thing is a bunch of bullshit. And I still have no explanation for it.