Repeat the same trial n times โ what's the probability of k successes?
When you independently repeat a trial with success probability p a total of n times, the probability of exactly k successes, P(X=k), is called the binomial distribution. Change n and p and see how the shape of the histogram changes, and where the mean (np) moves to.
Coin flip: Flip a coin n times, and see the probability of getting exactly k heads (success) shown as bars.