概率统计试验演示系统，可以进行常见的各种分布演示，中心及限定里演示，二维正态分布演示，画统计图（经验分布图，直方图，核密度图等）

威布尔分布 多阶段 概率分布密度 概率分布图(NSGA-II is a very famous multi-objective optimization algorithm. I submitted an example previously and wanted to make this submission useful to others by creating it as a function. Even though this function is very specific to