If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
Current time:0:00Total duration:1:05

Video transcript

I have a little simulation here that saves us time it does the random picking for us and it allows me to start with four whites and two blacks and I'm going to have the computer do many selections over this is every selection the computer is doing the equivalent of randomly picking out a marble it's shaking it and randomly picking it and you see that the num percentage of white it's getting pretty close to the actual to the actual percentage or a four to two ratio I should say of white to black so I think I believe you now because at the beginning I see a lot of variation right on this graph over time and now it's kind of flatlining it's definitely confuse like it's converging to the actual proportion and once again there's some chance that it didn't you know we could have this could have been just one of those one in a you know quadrillion circumstances we're just kept picking a wide every time but you know this is consistent with with the with the intuition as you know the more trials you you you have it just becomes harder and harder the probability of it being a significant departure from the actual proportion becomes lower