Safari Live - Day 42 | National Geographic

Hi everyone! Welcome to Khan Academy’s daily homeroom live stream. For those of you all who do not know what this is, this is something that we thought of when we started seeing mass school closures. We know that people are going to be at home, socially d…

What’s up, Graham! It’s guys here. So, as I’m sure we’re all aware by now, every single week there’s a new prediction that the stock market is going to come crashing down. It’s time to sell everything, and this time it’s for real. But this crash predictio…

We’re now going to talk about the Moria Empire, which is not just one of the greatest empires in Indian history, and really the first truly great Empire. It’s also one of the great empires of world history. Just for a little bit of context, we can see whe…

In this video, we’re going to get a little bit of practice setting up systems of linear equations based on a word problem. We’re not actually going to end up solving it; you can do that if you like, just for kicks. But really, we’re going to just focus on…

So, as I was driving around, I just noticed the big red and yellow big top in the distance, in the middle of essentially a paralyzed, frozen entire city. When I saw it, I thought to myself, “Well, I wonder what they’re doing?” That’s photographer Tomas S…

Alejandro was curious if sample median was an unbiased estimator of population median. He placed ping-pong balls numbered from zero to 32 in a drum and mixed them well. Note that the median of the population is 16. He then took a random sample of five bal…