random probability sample的意思|示意

The research of random fractal, an overlapping subject of probability and fractal, is focused on two respects: the random recursive sets and the sample paths of stochastic processes.

随机递归集和随机过程样本轨道的分形性质则是其两个重要的研究方向。

The survey data were collected from a random sample of 496 ninth grade students in 15 probability proportionate multistage cluster classes in Taichung City and County, Taiwan in 2005.

本研究资料得自2005年台中县市的496位依县市接近等比例、乡镇市区及学校不重复原则的15个接近等比例、丛集随机班级样本。