基本解釋[計(jì)算機(jī)科學(xué)技術(shù)]樣本平均估計(jì)器樣本均值估計(jì)器英漢例句雙語例句We give the approximation formulas of the variance of the sample ratio estimator for a population mean and its asymptotically non-biased estimator in multi-stage sampling.討論多階段抽樣比率估計(jì)及其樣本量選擇的問題 ，給出了比率估計(jì)抽樣均方誤差的近似公式及其漸近無偏估計(jì)的公式 。sample mean estimator更多例句專業(yè)釋義計(jì)算機(jī)科學(xué)技術(shù)樣本平均估計(jì)器樣本均值估計(jì)器