短語詞組短語a simple random sampling 簡單隨機抽樣stratified simple random sampling 分層簡單隨機抽樣;簡單隨機抽樣simple random sampling srs 簡單隨機抽樣simple random sampling model 單純隨機抽樣covariance for simple random sampling [統(tǒng)計]簡單隨機抽樣協(xié)方差simple random sampling without replacement 簡單隨機無放廻抽樣stratified simple random continuous sampling 分層簡單隨機連續(xù)抽樣simple random sampling with replacement 放廻的簡單隨機抽樣;簡單隨機放廻抽樣variance for simple random sampling 簡單隨機抽樣方差 返回 simple random sampling