Hi, i was wondering if some one could explain to me some things about probability. How is probability determined is it based on a average or a small set of experimental data? If you were to flip a coin Randomly 50 times and you get heads 40 times and tails 10 times could you then say you have a 80% probability to get heads then tails? I know that having a 50% probability for example in a coin toss doesn't mean you'll get head or tails 50% of the time, you just have a chance to but then how do you infer how many times you will get head or tails. Also if you flip a coin and have 50% probability to land on heads and you don't land on heads does that change the probability? or is it still 50%.