ratio variance

英 美
  • 方差比
  • ratio n.比率;比例
  • variance n.不一致;变化;[数]方差
    1. The result of the variance ratio showed that the random walk hypothesis on the wheat futures of ZCE was disproved.
      方差比检验的研究结果却表明郑州小麦期货市场不满足有效性假设。