Probability is simply how likely something is to happen. Whenever we’re unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they …

Probability tells us how often some event will happen after many repeated trials. You've experienced probability when you've flipped a coin, rolled some dice, or looked at a weather …

And it makes much more sense to talk about the probability of a random variable equaling a value, or the probability that it is less than or greater than something, or the probability that it …

The probability of getting "heads," given that it's a Tuesday, is still 1 / 2 . So the result of a coin flip and the day being Tuesday are independent events; knowing it was a Tuesday didn't change …

Learn statistics and probability—everything you'd want to know about descriptive and inferential statistics.

The equation P (A and B) = P (A ∣ B) × P (B) might seem confusing at first, but it's essentially saying that the probability of both events A and B happening is the probability of event A …

Learn Random variables Discrete and continuous random variables Constructing a probability distribution for random variable Probability models example: frozen yogurt Valid discrete …

And so, if you were to say theoretically, what is the probability, if you stuck your hand in and you're not looking, what is the probability of picking a magenta?

We give you an introduction to probability through the example of flipping a quarter and rolling a die.

This introduction to probability and statistics explores probability models, sample spaces, compound events, random samples, and a whole lot more.