Explore theoretical and experimental probability video lessons that compare what is expected to happen with what actually happens during an experiment. Learn how to calculate theoretical probability using sample spaces and favorable outcomes, determine experimental probability from data collected during trials, and analyze results from simulations, random experiments, coin flips, spinners, and dice rolls. Discover how increasing the number of trials helps experimental results move closer to theoretical predictions, interpret probabilities along the probability continuum from impossible to certain, and use data to make predictions about future events.