An array of inferential statistical procedures (methodologies for estimating population parameters based upon sample data) could be fruitfully exploited, but at present are not being applied.
有许多 推论统计步骤（根据样本数据估计总体参数的方法）可以被充分利用，但目前却没有应用它们。
For a kind of population, the asymptotic best property of trimmed mean is discussed. Then, a expression of the best trimmed estimate of population parameters is given.
首先对一类总体讨论了截尾均值的渐近最优性，然后给出了更一般情形总体参数最优截尾估计的一个表达式。
The certain concentrations of fipronil approaching the LC50 can negatively affect population parameters of Daphnia pulex.
氟虫腈在水中的质量浓度达到LC50时对大型蚤的种群有影响。
Population parameters such as birth and death rates which vary with density are said to be density dependent.
如果种群参数如出生率和死亡率随种群密度的变化而变换，就可以说是密度制约的。
Population parameters such as birth and death rates which vary with density are said to be density dependent.
如果种群参数如出生率和死亡率随种群密度的变化而变换，就可以说是密度制约的。
应用推荐