1. 分层抽样：stratified sampling 统计处理 | stochastic variable 分层抽样 | sum of cross products of 随机变量
2. 随机变量：stochastic radiation effect 随机辐射效应 | stochastic variable 随机变量 | stockpiling 存货
3. 随机变数：stochastic programming 随机规划法 | stochastic variable 随机变数 | stochastically dependent event 随机相依事件
4. 機率變數：stochastics 機率學 | stochastic variable 機率變數 | stock 原種;砧木;根株;漁獲對象
noun
1. a variable quantity that is random
Synonym: random variable variate variant chance variable