Through variance ratio test, we find the Chinese warrant markets do not reach weak form market efficiency, and simple trading rules of technique analysis prove some kind of efficacy.

通过方差比检验，我们发现中国权证市场不具弱有效性，简单交易规则一定程度上能在权证市场中有效预测。

Optimum Ratio is obtained by orthogonal test and variance analysis for different factors and levels.

通过对型砂各因子和水平的正交试验和方差分析，得出了最佳的配比。

The test result shows that we got the optimum emulsified diesel oil of definite mixing ratio by variance analysis of power smoke and consume oil.

以发动机功率、耗油率和烟度的综合评价值为指标进行方差分析，优选最佳的乳化油配比方案。

We use variance-ratio methodology to test the hypothesis that stock return follows a random walk. But the results of variance-ratio tests reject the random walk hypothesis in China.

使用方差比方法检验中国股票市场上股票收益服从随机游走的假设，检验结果拒绝了该假设。