variance of proportion

Though the optical soliton time jitter is in direct proportion to the running time, but through the long time sampling, the variance of the measure result is a constant, which shows the project is feasible.

尽管光孤子到达时间的抖动正比于它的运行时间，但经过较长时间的测量，测量结果的方差可以保持为一常数，说明这个方案是可行的。

Hereditary capacity in a narrow sense is 65.87%, showing that the ratio of variance of additive inheritance ( fixed Part of genetic variation) in the proportion of phenotype variance was relatively high.

狭义遗传力为65.87%，表明加性遗传方差（遗传变异的可固定部分）占表现型方差比例中的比重较大。

Firstly, we deal with the mean-variance frontier of arbitrage portfolios under investment proportion limitations.

因此, 考虑到现实应用,对套利组合的分析也须研究存在投资权重限制时的选择问题.