random walk hypothesis

all these factors restrict emh and random walk hypothesis to give exact explanations to real markets.

这一切使得EMH及随机游走假说对市场的解释能力受到限制。

Empirical analysis of hypothesis of market efficiency always is tested by random walk, coefficiency and ARCH class models. ARCH class models can expose conditional time varying variance, clustering and fat tail of distribution of high frequency financial time series.

资本市场有效性假说的实证分析主要有随机游走检验、相关性检验和ARCH类模型检验，而ARCH类模型较好地揭示高频金融时间序列的条件方差时变性、波动集束和宽尾分布现象。

his investing record is the most unimpeachable refutation of the random walk hypothesis ever!

他的投资记录是迄今为止对“自由漫步假说”无懈可击的反驳。