Box Plots and Frequency Plots, Mean and Median
And below is a coin flipping experiment. The number of coins (n) is 10, and the probability of heads (p) is 0.5. Each time you click the play button, the program flips 10 coins and counts the number of heads. The x-axis shows the various possible results and the y-axis shows the frequency (as a decimal) with which that result appears. For example, if above the 4 on the x-axis the bar goes up to 0.3, that means you got 4 heads 30% of the time. If you keep doing the experiment, you expect that 5 heads will come up the most often, 4 heads less often, and so on. See if that happens!
Coin Flipping Towards a Normal Distribution