variance of single sample

Disturbed by random selection within a certain number of particles in the sample, calculate the sample mean and variance of the target space, which is proposed for the maximization and minimization problems of the robust model ofa single target, and extended to multiple targets. 4.

通过随机选取粒子扰动范围内一定数量的样本，计算出样本目标空间的均值和方差，由此提出了针对最大化和最小化问题的鲁棒模型，并推广到多个目标的优化命题。

As a sample of the 184 listed companies in the Shanghai Stock Exchange, selected financial data of companies in 2003-2009, use single factor analysis of variance, LSD test and panel data fixed effects model.

以在上海交易所上市的184家上市公司为研究样本，选取2003-2009年的公司财务数据，采用单因素方差分析和LSD检验以及平行面板数据的固定效应模型进行假设验证。