标题: 请教一个Statistical Concepts and Market Returns 的问题 [打印本页] 作者: isaacyeung 时间: 2014-4-16 10:29 标题: 请教一个Statistical Concepts and Market Returns 的问题
The following ten observations are a sample drawn from a normal population: 25, 20, 18, -5, 35, 21, -11, 8, 20, and 9. The fourth quintile (80th percentile) of the sample is ?作者: adjani.zhang 时间: 2014-4-16 11:43
