Investigation of Certain and Random Phenomena Based on Mathematical Modeling and Random Experiment

In this paper, the difference between certain phenomena and random ones has been investigated from the perspective of classical mechanics by modeling, and of probability by conducting random experiment through the research of cointossing experiment.The focus is discussing the unpredictability property of the outcomes of random experiment, and thus explaining the non-deterministic property of random phenomenon.Furthermore, by analyzing the results of mass repeated random experiments, this paper finds that the results will show a certain law, which thus explains the statistical regularity rule of random phenomenon.